55479137408 has 72 divisors (see below), whose sum is σ = 112135215465. Its totient is φ = 27341176320.

The previous prime is 55479137401. The next prime is 55479137429. The reversal of 55479137408 is 80473197455.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 53235409984 + 2243727424 = 230728^2 + 47368^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=166552.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55479137408.

It is not an unprimeable number, because it can be changed into a prime (55479137401) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 290466593 + ... + 290466783.

Almost surely, 2^55479137408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55479137408

55479137408 is an abundant number, since it is smaller than the sum of its proper divisors (56656078057).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55479137408 is an frugal number, since it uses more digits than its factorization.

55479137408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 53.

The spelling of 55479137408 in words is "fifty-five billion, four hundred seventy-nine million, one hundred thirty-seven thousand, four hundred eight".