55857718000 has 80 divisors (see below), whose sum is σ = 154358852544. Its totient is φ = 19151212800.

The previous prime is 55857717983. The next prime is 55857718067. The reversal of 55857718000 is 81775855.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1980919 + ... + 2008918.

Almost surely, 2^55857718000 is an apocalyptic number.

55857718000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55857718000 is an abundant number, since it is smaller than the sum of its proper divisors (98501134544).

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

55857718000 is a wasteful number, since it uses less digits than its factorization.

55857718000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989867 (or 3989851 counting only the distinct ones).

The product of its (nonzero) digits is 392000, while the sum is 46.

The spelling of 55857718000 in words is "fifty-five billion, eight hundred fifty-seven million, seven hundred eighteen thousand".