54517721695 has 16 divisors (see below), whose sum is σ = 65892613248. Its totient is φ = 43300408320.

The previous prime is 54517721683. The next prime is 54517721711. The reversal of 54517721695 is 59612771545.

54517721695 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 54517721695 - 2⁵ = 54517721663 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 15 ways as a sum of consecutive naturals, for example, 938127 + ... + 994543.

It is an arithmetic number, because the mean of its divisors is an integer number (4118288328).

Almost surely, 2^54517721695 is an apocalyptic number.

54517721695 is a deficient number, since it is larger than the sum of its proper divisors (11374891553).

54517721695 is a wasteful number, since it uses less digits than its factorization.

54517721695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57810.

The product of its digits is 2646000, while the sum is 52.

The spelling of 54517721695 in words is "fifty-four billion, five hundred seventeen million, seven hundred twenty-one thousand, six hundred ninety-five".