51151002155 has 16 divisors (see below), whose sum is σ = 67514719968. Its totient is φ = 37200724000.

The previous prime is 51151002073. The next prime is 51151002173. The reversal of 51151002155 is 55120015115.

It is not a de Polignac number, because 51151002155 - 2²⁰ = 51149953579 is a prime.

It is a Duffinian 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, 3836396 + ... + 3849705.

It is an arithmetic number, because the mean of its divisors is an integer number (4219669998).

Almost surely, 2^51151002155 is an apocalyptic number.

51151002155 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51151002155 is a deficient number, since it is larger than the sum of its proper divisors (16363717813).

51151002155 is an equidigital number, since it uses as much as digits as its factorization.

51151002155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7686139 (or 7686117 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 26.

The spelling of 51151002155 in words is "fifty-one billion, one hundred fifty-one million, two thousand, one hundred fifty-five".