55555555500500 has 96 divisors (see below), whose sum is σ = 132794792178048. Its totient is φ = 20136214944000.

The previous prime is 55555555500499. The next prime is 55555555500539. The reversal of 55555555500500 is 500555555555.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 14762657 + ... + 18139656.

It is an arithmetic number, because the mean of its divisors is an integer number (1383279085188).

Almost surely, 2^{55555555500500} is an apocalyptic number.

55555555500500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55555555500500 is an abundant number, since it is smaller than the sum of its proper divisors (77239236677548).

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

55555555500500 is a wasteful number, since it uses less digits than its factorization.

55555555500500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32902650 (or 32902638 counting only the distinct ones).

The product of its (nonzero) digits is 9765625, while the sum is 50.

The spelling of 55555555500500 in words is "fifty-five trillion, five hundred fifty-five billion, five hundred fifty-five million, five hundred thousand, five hundred".