51115056351600 has 60 divisors (see below), whose sum is σ = 163738563850136. Its totient is φ = 13630681693440.

The previous prime is 51115056351581. The next prime is 51115056351631. The reversal of 51115056351600 is 615365051115.

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×51115056351600² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21297938947 + ... + 21297941346.

Almost surely, 2^{51115056351600} is an apocalyptic number.

51115056351600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51115056351600 is an abundant number, since it is smaller than the sum of its proper divisors (112623507498536).

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

51115056351600 is a wasteful number, since it uses less digits than its factorization.

51115056351600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42595880314 (or 42595880303 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 39.

The spelling of 51115056351600 in words is "fifty-one trillion, one hundred fifteen billion, fifty-six million, three hundred fifty-one thousand, six hundred".