51919300015 has 16 divisors (see below), whose sum is σ = 67984875936. Its totient is φ = 37749606400.

The previous prime is 51919300009. The next prime is 51919300049. The reversal of 51919300015 is 51000391915.

51919300015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-51919300015 is a prime.

It is a super-2 number, since 2×51919300015² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91839 + ... + 335071.

It is an arithmetic number, because the mean of its divisors is an integer number (4249054746).

Almost surely, 2^51919300015 is an apocalyptic number.

51919300015 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51919300015 is a deficient number, since it is larger than the sum of its proper divisors (16065575921).

51919300015 is a wasteful number, since it uses less digits than its factorization.

51919300015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247130.

The product of its (nonzero) digits is 6075, while the sum is 34.

The spelling of 51919300015 in words is "fifty-one billion, nine hundred nineteen million, three hundred thousand, fifteen".