55430458878 has 16 divisors (see below), whose sum is σ = 110863681920. Its totient is φ = 18476358936.

The previous prime is 55430458847. The next prime is 55430458891. The reversal of 55430458878 is 87885403455.

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, 221001 + ... + 399627.

It is an arithmetic number, because the mean of its divisors is an integer number (6928980120).

Almost surely, 2^55430458878 is an apocalyptic number.

55430458878 is an abundant number, since it is smaller than the sum of its proper divisors (55433223042).

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

55430458878 is a wasteful number, since it uses less digits than its factorization.

55430458878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230351.

The product of its (nonzero) digits is 21504000, while the sum is 57.

The spelling of 55430458878 in words is "fifty-five billion, four hundred thirty million, four hundred fifty-eight thousand, eight hundred seventy-eight".