51522426018 has 54 divisors (see below), whose sum is σ = 129874535739. Its totient is φ = 14718767112.

The previous prime is 51522425957. The next prime is 51522426029. The reversal of 51522426018 is 81062422515.

51522426018 is a `hidden beast` number, since 5 + 1 + 5 + 2 + 2 + 42 + 601 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 25761213009 + 25761213009 = 160503^2 + 160503^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=160503.

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 26 ways as a sum of consecutive naturals, for example, 6737305 + ... + 6744947.

Almost surely, 2^51522426018 is an apocalyptic number.

51522426018 is an abundant number, since it is smaller than the sum of its proper divisors (78352109721).

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

51522426018 is an frugal number, since it uses more digits than its factorization.

51522426018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15308 (or 7655 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 51522426018 in words is "fifty-one billion, five hundred twenty-two million, four hundred twenty-six thousand, eighteen".