51346155264 has 36 divisors (see below), whose sum is σ = 136655654856. Its totient is φ = 17115384832.

The previous prime is 51346155247. The next prime is 51346155269. The reversal of 51346155264 is 46255164315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51346155269) 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, 33427719 + ... + 33429254.

Almost surely, 2^51346155264 is an apocalyptic number.

It is an amenable number.

51346155264 is an abundant number, since it is smaller than the sum of its proper divisors (85309499592).

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

51346155264 is an equidigital number, since it uses as much as digits as its factorization.

51346155264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66856992 (or 66856978 counting only the distinct ones).

The product of its digits is 432000, while the sum is 42.

The spelling of 51346155264 in words is "fifty-one billion, three hundred forty-six million, one hundred fifty-five thousand, two hundred sixty-four".