54311646517 has 4 divisors (see below), whose sum is σ = 54838944160. Its totient is φ = 53784348876.

The previous prime is 54311646511. The next prime is 54311646527. The reversal of 54311646517 is 71564611345.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54311646517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54311646511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263648667 + ... + 263648872.

It is an arithmetic number, because the mean of its divisors is an integer number (13709736040).

Almost surely, 2^54311646517 is an apocalyptic number.

It is an amenable number.

54311646517 is a deficient number, since it is larger than the sum of its proper divisors (527297643).

54311646517 is a wasteful number, since it uses less digits than its factorization.

54311646517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527297642.

The product of its digits is 302400, while the sum is 43.

The spelling of 54311646517 in words is "fifty-four billion, three hundred eleven million, six hundred forty-six thousand, five hundred seventeen".