51149621104 has 20 divisors (see below), whose sum is σ = 101780835064. Its totient is φ = 24883599168.

The previous prime is 51149621069. The next prime is 51149621147. The reversal of 51149621104 is 40112694115.

It is a self number, because there is not a number n which added to its sum of digits gives 51149621104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43200102 + ... + 43201285.

Almost surely, 2^51149621104 is an apocalyptic number.

It is an amenable number.

51149621104 is a deficient number, since it is larger than the sum of its proper divisors (50631213960).

51149621104 is a wasteful number, since it uses less digits than its factorization.

51149621104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86401432 (or 86401426 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 51149621104 in words is "fifty-one billion, one hundred forty-nine million, six hundred twenty-one thousand, one hundred four".