51654555545615 has 16 divisors (see below), whose sum is σ = 67821163431840. Its totient is φ = 37455474846720.

The previous prime is 51654555545597. The next prime is 51654555545623.

51654555545615 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-51654555545615 is a prime.

It is a congruent 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, 1393414310 + ... + 1393451379.

It is an arithmetic number, because the mean of its divisors is an integer number (4238822714490).

Almost surely, 2^{51654555545615} is an apocalyptic number.

51654555545615 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51654555545615 is a deficient number, since it is larger than the sum of its proper divisors (16166607886225).

51654555545615 is a wasteful number, since it uses less digits than its factorization.

51654555545615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786866042.

The product of its digits is 225000000, while the sum is 62.

The spelling of 51654555545615 in words is "fifty-one trillion, six hundred fifty-four billion, five hundred fifty-five million, five hundred forty-five thousand, six hundred fifteen".