51701311072 has 24 divisors (see below), whose sum is σ = 103512162600. Its totient is φ = 25412507904.

The previous prime is 51701311043. The next prime is 51701311073. The reversal of 51701311072 is 27011310715.

It is a self number, because there is not a number n which added to its sum of digits gives 51701311072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51701311073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13690197 + ... + 13693972.

It is an arithmetic number, because the mean of its divisors is an integer number (4313006775).

Almost surely, 2^51701311072 is an apocalyptic number.

It is an amenable number.

51701311072 is an abundant number, since it is smaller than the sum of its proper divisors (51810851528).

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

51701311072 is a wasteful number, since it uses less digits than its factorization.

51701311072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27384238 (or 27384230 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 28.

Adding to 51701311072 its reverse (27011310715), we get a palindrome (78712621787).

The spelling of 51701311072 in words is "fifty-one billion, seven hundred one million, three hundred eleven thousand, seventy-two".