51544123215 has 32 divisors (see below), whose sum is σ = 88825415616. Its totient is φ = 25372446720.

The previous prime is 51544123193. The next prime is 51544123219. The reversal of 51544123215 is 51232144515.

It is not a de Polignac number, because 51544123215 - 2⁶ = 51544123151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51544123219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3130705 + ... + 3147125.

It is an arithmetic number, because the mean of its divisors is an integer number (2775794238).

Almost surely, 2^51544123215 is an apocalyptic number.

51544123215 is a deficient number, since it is larger than the sum of its proper divisors (37281292401).

51544123215 is a wasteful number, since it uses less digits than its factorization.

51544123215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32539.

The product of its digits is 24000, while the sum is 33.

The spelling of 51544123215 in words is "fifty-one billion, five hundred forty-four million, one hundred twenty-three thousand, two hundred fifteen".