51361300136 has 8 divisors (see below), whose sum is σ = 96302437770. Its totient is φ = 25680650064.

The previous prime is 51361300127. The next prime is 51361300183. The reversal of 51361300136 is 63100316315.

It can be written as a sum of positive squares in only one way, i.e., 46738116100 + 4623184036 = 216190^2 + 67994^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 51361300099 and 51361300108.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3210081251 + ... + 3210081266.

Almost surely, 2^51361300136 is an apocalyptic number.

It is an amenable number.

51361300136 is a deficient number, since it is larger than the sum of its proper divisors (44941137634).

51361300136 is a wasteful number, since it uses less digits than its factorization.

51361300136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6420162523 (or 6420162519 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 29.

The spelling of 51361300136 in words is "fifty-one billion, three hundred sixty-one million, three hundred thousand, one hundred thirty-six".