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57520606969 = 7193392310853
BaseRepresentation
bin110101100100011111…
…101100111011111001
312111110201011120220201
4311210133230323321
51420300233410334
642231414122201
74104262043410
oct654437547371
9174421146821
1057520606969
1122437979411
12b193650361
135568b94517
142ad9488477
151769c47c14
hexd647ecef9

57520606969 has 16 divisors (see below), whose sum is σ = 66101380992. Its totient is φ = 49030898688.

The previous prime is 57520606961. The next prime is 57520606999. The reversal of 57520606969 is 96960602575.

It is a cyclic number.

It is not a de Polignac number, because 57520606969 - 23 = 57520606961 is a prime.

It is a super-2 number, since 2×575206069692 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57520606961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5294547 + ... + 5305399.

It is an arithmetic number, because the mean of its divisors is an integer number (4131336312).

Almost surely, 257520606969 is an apocalyptic number.

It is an amenable number.

57520606969 is a deficient number, since it is larger than the sum of its proper divisors (8580774023).

57520606969 is a wasteful number, since it uses less digits than its factorization.

57520606969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14976.

The product of its (nonzero) digits is 6123600, while the sum is 55.

The spelling of 57520606969 in words is "fifty-seven billion, five hundred twenty million, six hundred six thousand, nine hundred sixty-nine".

Divisors: 1 7 193 1351 3923 10853 27461 75971 757139 2094629 5299973 14662403 42576319 298034233 8217229567 57520606969