54856025816879 has 4 divisors (see below), whose sum is σ = 62692600933584. Its totient is φ = 47019450700176.

The previous prime is 54856025816821. The next prime is 54856025816927. The reversal of 54856025816879 is 97861852065845.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 54856025816879 - 2³² = 54851730849583 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 (54856025816819) 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, 3918287558342 + ... + 3918287558355.

It is an arithmetic number, because the mean of its divisors is an integer number (15673150233396).

Almost surely, 2^{54856025816879} is an apocalyptic number.

54856025816879 is a deficient number, since it is larger than the sum of its proper divisors (7836575116705).

54856025816879 is an equidigital number, since it uses as much as digits as its factorization.

54856025816879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7836575116704.

The product of its (nonzero) digits is 1161216000, while the sum is 74.

The spelling of 54856025816879 in words is "fifty-four trillion, eight hundred fifty-six billion, twenty-five million, eight hundred sixteen thousand, eight hundred seventy-nine".