51526904139 has 24 divisors (see below), whose sum is σ = 77234160640. Its totient is φ = 34329094056.

The previous prime is 51526904129. The next prime is 51526904153. The reversal of 51526904139 is 93140962515.

51526904139 is a `hidden beast` number, since 5 + 1 + 526 + 90 + 4 + 1 + 39 = 666.

It is not a de Polignac number, because 51526904139 - 2¹³ = 51526895947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51526904094 and 51526904103.

It is not an unprimeable number, because it can be changed into a prime (51526904129) 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 23 ways as a sum of consecutive naturals, for example, 313122 + ... + 448440.

Almost surely, 2^51526904139 is an apocalyptic number.

51526904139 is a deficient number, since it is larger than the sum of its proper divisors (25707256501).

51526904139 is a wasteful number, since it uses less digits than its factorization.

51526904139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136901 (or 136889 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The spelling of 51526904139 in words is "fifty-one billion, five hundred twenty-six million, nine hundred four thousand, one hundred thirty-nine".