55408672880 has 40 divisors (see below), whose sum is σ = 140536545264. Its totient is φ = 20148608000.

The previous prime is 55408672877. The next prime is 55408672981. The reversal of 55408672880 is 8827680455.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×55408672880³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

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, 31481321 + ... + 31483080.

Almost surely, 2^55408672880 is an apocalyptic number.

It is an amenable number.

55408672880 is an abundant number, since it is smaller than the sum of its proper divisors (85127872384).

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

55408672880 is a wasteful number, since it uses less digits than its factorization.

55408672880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62964425 (or 62964419 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 53.

The spelling of 55408672880 in words is "fifty-five billion, four hundred eight million, six hundred seventy-two thousand, eight hundred eighty".