51136198156 has 6 divisors (see below), whose sum is σ = 89488346780. Its totient is φ = 25568099076.

The previous prime is 51136198147. The next prime is 51136198171. The reversal of 51136198156 is 65189163115.

It is a happy number.

It is a super-2 number, since 2×51136198156² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6392024766 + ... + 6392024773.

Almost surely, 2^51136198156 is an apocalyptic number.

It is an amenable number.

51136198156 is a deficient number, since it is larger than the sum of its proper divisors (38352148624).

51136198156 is a wasteful number, since it uses less digits than its factorization.

51136198156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12784049543 (or 12784049541 counting only the distinct ones).

The product of its digits is 194400, while the sum is 46.

The spelling of 51136198156 in words is "fifty-one billion, one hundred thirty-six million, one hundred ninety-eight thousand, one hundred fifty-six".