51123473464 has 16 divisors (see below), whose sum is σ = 109550300400. Its totient is φ = 21910060032.

The previous prime is 51123473459. The next prime is 51123473473. The reversal of 51123473464 is 46437432115.

51123473464 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51123473464² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456459529 + ... + 456459640.

It is an arithmetic number, because the mean of its divisors is an integer number (6846893775).

Almost surely, 2^51123473464 is an apocalyptic number.

It is an amenable number.

51123473464 is an abundant number, since it is smaller than the sum of its proper divisors (58426826936).

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

51123473464 is a wasteful number, since it uses less digits than its factorization.

51123473464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912919182 (or 912919178 counting only the distinct ones).

The product of its digits is 241920, while the sum is 40.

The spelling of 51123473464 in words is "fifty-one billion, one hundred twenty-three million, four hundred seventy-three thousand, four hundred sixty-four".