51645401622162 has 24 divisors (see below), whose sum is σ = 112703394432720. Its totient is φ = 17091283989240.

The previous prime is 51645401621963. The next prime is 51645401622209. The reversal of 51645401622162 is 26122610454615.

51645401622162 is a `hidden beast` number, since 5 + 1 + 6 + 4 + 5 + 4 + 0 + 1 + 622 + 16 + 2 = 666.

51645401622162 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 in 11 ways as a sum of consecutive naturals, for example, 10320821164 + ... + 10320826167.

It is an arithmetic number, because the mean of its divisors is an integer number (4695974768030).

Almost surely, 2^{51645401622162} is an apocalyptic number.

51645401622162 is an abundant number, since it is smaller than the sum of its proper divisors (61057992810558).

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

51645401622162 is a wasteful number, since it uses less digits than its factorization.

51645401622162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20641647478 (or 20641647475 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 51645401622162 in words is "fifty-one trillion, six hundred forty-five billion, four hundred one million, six hundred twenty-two thousand, one hundred sixty-two".