51554442352356 has 24 divisors (see below), whose sum is σ = 133659665358240. Its totient is φ = 17184814117416.

The previous prime is 51554442352351. The next prime is 51554442352393. The reversal of 51554442352356 is 65325324445515.

It is a happy number.

51554442352356 is a `hidden beast` number, since 5 + 1 + 5 + 5 + 4 + 44 + 23 + 523 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (51554442352351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238677973746 + ... + 238677973961.

It is an arithmetic number, because the mean of its divisors is an integer number (5569152723260).

Almost surely, 2^{51554442352356} is an apocalyptic number.

It is an amenable number.

51554442352356 is an abundant number, since it is smaller than the sum of its proper divisors (82105223005884).

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

51554442352356 is a wasteful number, since it uses less digits than its factorization.

51554442352356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477355947720 (or 477355947712 counting only the distinct ones).

The product of its digits is 43200000, while the sum is 54.

The spelling of 51554442352356 in words is "fifty-one trillion, five hundred fifty-four billion, four hundred forty-two million, three hundred fifty-two thousand, three hundred fifty-six".