51139069074 has 24 divisors (see below), whose sum is σ = 113795947980. Its totient is φ = 16585643808.

The previous prime is 51139069067. The next prime is 51139069081. The reversal of 51139069074 is 47096093115.

51139069074 is a `hidden beast` number, since 511 + 3 + 9 + 0 + 69 + 0 + 74 = 666.

It is an interprime number because it is at equal distance from previous prime (51139069067) and next prime (51139069081).

It can be written as a sum of positive squares in 2 ways, for example, as 50766849225 + 372219849 = 225315^2 + 19293^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38392029 + ... + 38393360.

Almost surely, 2^51139069074 is an apocalyptic number.

51139069074 is an abundant number, since it is smaller than the sum of its proper divisors (62656878906).

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

51139069074 is a wasteful number, since it uses less digits than its factorization.

51139069074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76785434 (or 76785431 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The spelling of 51139069074 in words is "fifty-one billion, one hundred thirty-nine million, sixty-nine thousand, seventy-four".