54839981915 has 8 divisors (see below), whose sum is σ = 65812130640. Its totient is φ = 43869217312.

The previous prime is 54839981909. The next prime is 54839981939. The reversal of 54839981915 is 51918993845.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54839981915 - 2⁴ = 54839981899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256769 + ... + 419058.

It is an arithmetic number, because the mean of its divisors is an integer number (8226516330).

Almost surely, 2^54839981915 is an apocalyptic number.

54839981915 is a deficient number, since it is larger than the sum of its proper divisors (10972148725).

54839981915 is a wasteful number, since it uses less digits than its factorization.

54839981915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692061.

The product of its digits is 13996800, while the sum is 62.

The spelling of 54839981915 in words is "fifty-four billion, eight hundred thirty-nine million, nine hundred eighty-one thousand, nine hundred fifteen".