51456911784 has 32 divisors (see below), whose sum is σ = 131069495520. Its totient is φ = 16828675136.

The previous prime is 51456911767. The next prime is 51456911797. The reversal of 51456911784 is 48711965415.

51456911784 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20225502 + ... + 20228045.

It is an arithmetic number, because the mean of its divisors is an integer number (4095921735).

Almost surely, 2^51456911784 is an apocalyptic number.

It is an amenable number.

51456911784 is an abundant number, since it is smaller than the sum of its proper divisors (79612583736).

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

51456911784 is a wasteful number, since it uses less digits than its factorization.

51456911784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40453609 (or 40453605 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 51.

The spelling of 51456911784 in words is "fifty-one billion, four hundred fifty-six million, nine hundred eleven thousand, seven hundred eighty-four".