51109724264 has 8 divisors (see below), whose sum is σ = 95830733010. Its totient is φ = 25554862128.

The previous prime is 51109724261. The next prime is 51109724279. The reversal of 51109724264 is 46242790115.

It can be written as a sum of positive squares in only one way, i.e., 51107644900 + 2079364 = 226070^2 + 1442^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×51109724264² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51109724261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3194357759 + ... + 3194357774.

Almost surely, 2^51109724264 is an apocalyptic number.

It is an amenable number.

51109724264 is a deficient number, since it is larger than the sum of its proper divisors (44721008746).

51109724264 is a wasteful number, since it uses less digits than its factorization.

51109724264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6388715539 (or 6388715535 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 51109724264 in words is "fifty-one billion, one hundred nine million, seven hundred twenty-four thousand, two hundred sixty-four".