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53987896464 = 24315746315473
BaseRepresentation
bin110010010001111011…
…011110110010010000
312011100111202022010220
4302101323132302100
51341031400141324
640445055553040
73620604356025
oct622173366220
9164314668126
1053987896464
112099483a757
12a56852b780
135125014288
14288221354c
15160ea28b79
hexc91edec90

53987896464 has 80 divisors (see below), whose sum is σ = 140669306112. Its totient is φ = 17841567744.

The previous prime is 53987896453. The next prime is 53987896477. The reversal of 53987896464 is 46469878935.

53987896464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3481432 + ... + 3496904.

Almost surely, 253987896464 is an apocalyptic number.

It is an amenable number.

53987896464 is an abundant number, since it is smaller than the sum of its proper divisors (86681409648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53987896464 is a wasteful number, since it uses less digits than its factorization.

53987896464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16104 (or 16098 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 69.

The spelling of 53987896464 in words is "fifty-three billion, nine hundred eighty-seven million, eight hundred ninety-six thousand, four hundred sixty-four".

Divisors: 1 2 3 4 6 8 12 16 24 48 157 314 463 471 628 926 942 1256 1389 1852 1884 2512 2778 3704 3768 5556 7408 7536 11112 15473 22224 30946 46419 61892 72691 92838 123784 145382 185676 218073 247568 290764 371352 436146 581528 742704 872292 1163056 1744584 2429261 3489168 4858522 7163999 7287783 9717044 14327998 14575566 19434088 21491997 28655996 29151132 38868176 42983994 57311992 58302264 85967988 114623984 116604528 171935976 343871952 1124747843 2249495686 3374243529 4498991372 6748487058 8997982744 13496974116 17995965488 26993948232 53987896464