51311143015 has 32 divisors (see below), whose sum is σ = 67486208832. Its totient is φ = 37142400000.

The previous prime is 51311143007. The next prime is 51311143043. The reversal of 51311143015 is 51034111315.

It is not a de Polignac number, because 51311143015 - 2³ = 51311143007 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 17096515 + ... + 17099515.

It is an arithmetic number, because the mean of its divisors is an integer number (2108944026).

Almost surely, 2^51311143015 is an apocalyptic number.

51311143015 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51311143015 is a deficient number, since it is larger than the sum of its proper divisors (16175065817).

51311143015 is a wasteful number, since it uses less digits than its factorization.

51311143015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4371.

The product of its (nonzero) digits is 900, while the sum is 25.

The spelling of 51311143015 in words is "fifty-one billion, three hundred eleven million, one hundred forty-three thousand, fifteen".