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57169031472 = 243672234349
BaseRepresentation
bin110101001111100010…
…100011000100110000
312110120012121201000000
4311033202203010300
51414040233001342
642132454430000
74062462515100
oct651742430460
9173505551000
1057169031472
1122277478553
12b0b5962300
1355110a9197
142aa48cb200
151748e4c44c
hexd4f8a3130

57169031472 has 420 divisors, whose sum is σ = 201630956400. Its totient is φ = 15620242176.

The previous prime is 57169031471. The next prime is 57169031473. The reversal of 57169031472 is 27413096175.

57169031472 is a `hidden beast` number, since 57 + 16 + 90 + 31 + 472 = 666.

It is an interprime number because it is at equal distance from previous prime (57169031471) and next prime (57169031473).

It is not an unprimeable number, because it can be changed into a prime (57169031471) by changing a digit.

It is a polite number, since it can be written in 83 ways as a sum of consecutive naturals, for example, 13143154 + ... + 13147502.

Almost surely, 257169031472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57169031472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100815478200).

57169031472 is an abundant number, since it is smaller than the sum of its proper divisors (144461924928).

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

57169031472 is a wasteful number, since it uses less digits than its factorization.

57169031472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4412 (or 4384 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The spelling of 57169031472 in words is "fifty-seven billion, one hundred sixty-nine million, thirty-one thousand, four hundred seventy-two".