55408672879 has 16 divisors (see below), whose sum is σ = 66943169280. Its totient is φ = 44800378560.

The previous prime is 55408672877. The next prime is 55408672981. The reversal of 55408672879 is 97827680455.

It is not a de Polignac number, because 55408672879 - 2¹ = 55408672877 is a prime.

It is a super-3 number, since 3×55408672879³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55408672871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 863017 + ... + 924994.

It is an arithmetic number, because the mean of its divisors is an integer number (4183948080).

Almost surely, 2^55408672879 is an apocalyptic number.

55408672879 is a deficient number, since it is larger than the sum of its proper divisors (11534496401).

55408672879 is a wasteful number, since it uses less digits than its factorization.

55408672879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788270.

The product of its (nonzero) digits is 33868800, while the sum is 61.

The spelling of 55408672879 in words is "fifty-five billion, four hundred eight million, six hundred seventy-two thousand, eight hundred seventy-nine".