55398959628 has 24 divisors (see below), whose sum is σ = 129280069632. Its totient is φ = 18464058384.

The previous prime is 55398959597. The next prime is 55398959639. The reversal of 55398959628 is 82695989355.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179100 + ... + 377987.

It is an arithmetic number, because the mean of its divisors is an integer number (5386669568).

Almost surely, 2^55398959628 is an apocalyptic number.

It is an amenable number.

55398959628 is an abundant number, since it is smaller than the sum of its proper divisors (73881110004).

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

55398959628 is a wasteful number, since it uses less digits than its factorization.

55398959628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565381 (or 565379 counting only the distinct ones).

The product of its digits is 209952000, while the sum is 69.

The spelling of 55398959628 in words is "fifty-five billion, three hundred ninety-eight million, nine hundred fifty-nine thousand, six hundred twenty-eight".