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387056611825 = 52137182120431
BaseRepresentation
bin1011010000111100101…
…11110011000111110001
31101000001122022010100121
411220132113303013301
522320142443034300
6453451130250241
736651423626302
oct5503627630761
91330048263317
10387056611825
1113a171404284
1263020586981
132a664bcb380
1414a3b1727a9
15a10542a81a
hex5a1e5f31f1

387056611825 has 48 divisors (see below), whose sum is σ = 524813409792. Its totient is φ = 281443680000.

The previous prime is 387056611787. The next prime is 387056611831. The reversal of 387056611825 is 528116650783.

It is a de Polignac number, because none of the positive numbers 2k-387056611825 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18934360 + ... + 18954790.

It is an arithmetic number, because the mean of its divisors is an integer number (10933612704).

Almost surely, 2387056611825 is an apocalyptic number.

It is an amenable number.

387056611825 is a deficient number, since it is larger than the sum of its proper divisors (137756797967).

387056611825 is a wasteful number, since it uses less digits than its factorization.

387056611825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21346 (or 21341 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 52.

The spelling of 387056611825 in words is "three hundred eighty-seven billion, fifty-six million, six hundred eleven thousand, eight hundred twenty-five".

Divisors: 1 5 13 25 65 71 325 355 821 923 1775 4105 4615 10673 20431 20525 23075 53365 58291 102155 265603 266825 291455 510775 757783 1328015 1450601 1457275 3788915 6640075 7253005 16773851 18857813 18944575 36265025 83869255 94289065 218060063 419346275 471445325 1090300315 1190943421 5451501575 5954717105 15482264473 29773585525 77411322365 387056611825