51440922752 has 24 divisors (see below), whose sum is σ = 102485075535. Its totient is φ = 25719178368.

The previous prime is 51440922737. The next prime is 51440922809. The reversal of 51440922752 is 25722904415.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 25720461376 + 25720461376 = 160376^2 + 160376^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=160376.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2555993 + ... + 2576039.

Almost surely, 2^51440922752 is an apocalyptic number.

It is an amenable number.

51440922752 is a deficient number, since it is larger than the sum of its proper divisors (51044152783).

51440922752 is an frugal number, since it uses more digits than its factorization.

51440922752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40108 (or 20049 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 51440922752 in words is "fifty-one billion, four hundred forty million, nine hundred twenty-two thousand, seven hundred fifty-two".