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57681643415 = 5117920876361
BaseRepresentation
bin110101101110000110…
…000000011110010111
312111212221012002101112
4311232012000132113
51421113000042130
642255405445235
74111255610414
oct655606003627
9174787162345
1057681643415
112250a869490
12b21957081b
135593358966
142b12a0710b
151778e57495
hexd6e180797

57681643415 has 32 divisors (see below), whose sum is σ = 76515010560. Its totient is φ = 41392915200.

The previous prime is 57681643339. The next prime is 57681643441. The reversal of 57681643415 is 51434618675.

57681643415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 57681643415 - 224 = 57664866199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9064835 + ... + 9071195.

It is an arithmetic number, because the mean of its divisors is an integer number (2391094080).

Almost surely, 257681643415 is an apocalyptic number.

57681643415 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

57681643415 is a deficient number, since it is larger than the sum of its proper divisors (18833367145).

57681643415 is a wasteful number, since it uses less digits than its factorization.

57681643415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8543.

The product of its digits is 2419200, while the sum is 50.

The spelling of 57681643415 in words is "fifty-seven billion, six hundred eighty-one million, six hundred forty-three thousand, four hundred fifteen".

Divisors: 1 5 11 55 79 395 869 2087 4345 6361 10435 22957 31805 69971 114785 164873 349855 502519 824365 1813603 2512595 5527709 9068015 13275407 27638545 66377035 146029477 730147385 1048757153 5243785765 11536328683 57681643415