54840531715 has 4 divisors (see below), whose sum is σ = 65808638064. Its totient is φ = 43872425368.

The previous prime is 54840531709. The next prime is 54840531719. The reversal of 54840531715 is 51713504845.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54840531715 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54840531719) 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 3 ways as a sum of consecutive naturals, for example, 5484053167 + ... + 5484053176.

It is an arithmetic number, because the mean of its divisors is an integer number (16452159516).

Almost surely, 2^54840531715 is an apocalyptic number.

54840531715 is a deficient number, since it is larger than the sum of its proper divisors (10968106349).

54840531715 is a wasteful number, since it uses less digits than its factorization.

54840531715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10968106348.

The product of its (nonzero) digits is 336000, while the sum is 43.

The spelling of 54840531715 in words is "fifty-four billion, eight hundred forty million, five hundred thirty-one thousand, seven hundred fifteen".