51544245415 has 32 divisors (see below), whose sum is σ = 67813663680. Its totient is φ = 37604181888.

The previous prime is 51544245413. The next prime is 51544245439. The reversal of 51544245415 is 51454244515.

It is not a de Polignac number, because 51544245415 - 2¹ = 51544245413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51544245413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 883489 + ... + 940021.

It is an arithmetic number, because the mean of its divisors is an integer number (2119176990).

Almost surely, 2^51544245415 is an apocalyptic number.

51544245415 is a deficient number, since it is larger than the sum of its proper divisors (16269418265).

51544245415 is an equidigital number, since it uses as much as digits as its factorization.

51544245415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56660 (or 56634 counting only the distinct ones).

The product of its digits is 320000, while the sum is 40.

The spelling of 51544245415 in words is "fifty-one billion, five hundred forty-four million, two hundred forty-five thousand, four hundred fifteen".