51197595515 has 8 divisors (see below), whose sum is σ = 67022306928. Its totient is φ = 37234614880.

The previous prime is 51197595497. The next prime is 51197595523. The reversal of 51197595515 is 51559579115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51197595515 - 2⁸ = 51197595259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465432632 + ... + 465432741.

It is an arithmetic number, because the mean of its divisors is an integer number (8377788366).

Almost surely, 2^51197595515 is an apocalyptic number.

51197595515 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51197595515 is a deficient number, since it is larger than the sum of its proper divisors (15824711413).

51197595515 is a wasteful number, since it uses less digits than its factorization.

51197595515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930865389.

The product of its digits is 1771875, while the sum is 53.

The spelling of 51197595515 in words is "fifty-one billion, one hundred ninety-seven million, five hundred ninety-five thousand, five hundred fifteen".