51397104112 has 20 divisors (see below), whose sum is σ = 99623786616. Its totient is φ = 25687739840.

The previous prime is 51397104107. The next prime is 51397104137. The reversal of 51397104112 is 21140179315.

It is a happy number.

It is a super-2 number, since 2×51397104112² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 636478 + ... + 712669.

Almost surely, 2^51397104112 is an apocalyptic number.

It is an amenable number.

51397104112 is a deficient number, since it is larger than the sum of its proper divisors (48226682504).

51397104112 is a wasteful number, since it uses less digits than its factorization.

51397104112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351536 (or 1351530 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The spelling of 51397104112 in words is "fifty-one billion, three hundred ninety-seven million, one hundred four thousand, one hundred twelve".