51426950720 has 28 divisors (see below), whose sum is σ = 122460427164. Its totient is φ = 20570780160.

The previous prime is 51426950713. The next prime is 51426950749. The reversal of 51426950720 is 2705962415.

It can be written as a sum of positive squares in 2 ways, for example, as 14430736384 + 36996214336 = 120128^2 + 192344^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80354291 + ... + 80354930.

Almost surely, 2^51426950720 is an apocalyptic number.

It is an amenable number.

51426950720 is an abundant number, since it is smaller than the sum of its proper divisors (71033476444).

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

51426950720 is a wasteful number, since it uses less digits than its factorization.

51426950720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160709238 (or 160709228 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 51426950720 in words is "fifty-one billion, four hundred twenty-six million, nine hundred fifty thousand, seven hundred twenty".