51158492808456 has 64 divisors (see below), whose sum is σ = 139674983500800. Its totient is φ = 15485704545600.

The previous prime is 51158492808431. The next prime is 51158492808461. The reversal of 51158492808456 is 65480829485115.

It is a Harshad number since it is a multiple of its sum of digits (66).

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 15 ways as a sum of consecutive naturals, for example, 105188380 + ... + 105673611.

It is an arithmetic number, because the mean of its divisors is an integer number (2182421617200).

Almost surely, 2^{51158492808456} is an apocalyptic number.

It is an amenable number.

51158492808456 is an abundant number, since it is smaller than the sum of its proper divisors (88516490692344).

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

51158492808456 is a wasteful number, since it uses less digits than its factorization.

51158492808456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210862930 (or 210862926 counting only the distinct ones).

The product of its (nonzero) digits is 110592000, while the sum is 66.

The spelling of 51158492808456 in words is "fifty-one trillion, one hundred fifty-eight billion, four hundred ninety-two million, eight hundred eight thousand, four hundred fifty-six".