55910071800 has 672 divisors, whose sum is σ = 216048850560. Its totient is φ = 13335840000.

The previous prime is 55910071781. The next prime is 55910071817. The reversal of 55910071800 is 817001955.

It is a super-2 number, since 2×55910071800² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 113869555 + ... + 113870045.

Almost surely, 2^55910071800 is an apocalyptic number.

55910071800 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55910071800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108024425280).

55910071800 is an abundant number, since it is smaller than the sum of its proper divisors (160138778760).

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

55910071800 is a wasteful number, since it uses less digits than its factorization.

55910071800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607 (or 583 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 36.

The spelling of 55910071800 in words is "fifty-five billion, nine hundred ten million, seventy-one thousand, eight hundred".