51515348223136 has 48 divisors (see below), whose sum is σ = 120949078449024. Its totient is φ = 21118093058304.

The previous prime is 51515348223109. The next prime is 51515348223167. The reversal of 51515348223136 is 63132284351515.

It is a super-2 number, since 2×51515348223136² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51515348223136.

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 7 ways as a sum of consecutive naturals, for example, 4999543395 + ... + 4999553698.

It is an arithmetic number, because the mean of its divisors is an integer number (2519772467688).

Almost surely, 2^{51515348223136} is an apocalyptic number.

51515348223136 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51515348223136 is an abundant number, since it is smaller than the sum of its proper divisors (69433730225888).

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

51515348223136 is a wasteful number, since it uses less digits than its factorization.

51515348223136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9999097133 (or 9999097125 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 49.

The spelling of 51515348223136 in words is "fifty-one trillion, five hundred fifteen billion, three hundred forty-eight million, two hundred twenty-three thousand, one hundred thirty-six".