51045644654015 has 32 divisors (see below), whose sum is σ = 66917603361024. Its totient is φ = 37071777277440.

The previous prime is 51045644654003. The next prime is 51045644654071.

51045644654015 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51045644654015 - 2¹⁸ = 51045644391871 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, 326160812 + ... + 326317278.

It is an arithmetic number, because the mean of its divisors is an integer number (2091175105032).

Almost surely, 2^{51045644654015} is an apocalyptic number.

51045644654015 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51045644654015 is a deficient number, since it is larger than the sum of its proper divisors (15871958707009).

51045644654015 is a wasteful number, since it uses less digits than its factorization.

51045644654015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164807.

The product of its (nonzero) digits is 5760000, while the sum is 50.

It can be divided in two parts, 5104564 and 4654015, that added together give a palindrome (9758579).

The spelling of 51045644654015 in words is "fifty-one trillion, forty-five billion, six hundred forty-four million, six hundred fifty-four thousand, fifteen".