55208338920 has 96 divisors (see below), whose sum is σ = 205059553920. Its totient is φ = 12619048320.

The previous prime is 55208338909. The next prime is 55208338921. The reversal of 55208338920 is 2983380255.

55208338920 is a `hidden beast` number, since 5 + 520 + 8 + 3 + 38 + 92 + 0 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (55208338921) 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 23 ways as a sum of consecutive naturals, for example, 10951516 + ... + 10956555.

It is an arithmetic number, because the mean of its divisors is an integer number (2136037020).

Almost surely, 2^55208338920 is an apocalyptic number.

It is an amenable number.

55208338920 is an abundant number, since it is smaller than the sum of its proper divisors (149851215000).

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

55208338920 is a wasteful number, since it uses less digits than its factorization.

55208338920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21908095 (or 21908088 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 55208338920 in words is "fifty-five billion, two hundred eight million, three hundred thirty-eight thousand, nine hundred twenty".