55550005555550 has 96 divisors (see below), whose sum is σ = 121672456750080. Its totient is φ = 18655474006400.

The previous prime is 55550005555531. The next prime is 55550005555567. The reversal of 55550005555550 is 5555550005555.

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 polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75345302 + ... + 76079001.

It is an arithmetic number, because the mean of its divisors is an integer number (1267421424480).

Almost surely, 2^{55550005555550} is an apocalyptic number.

55550005555550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55550005555550 is an abundant number, since it is smaller than the sum of its proper divisors (66122451194530).

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

55550005555550 is a wasteful number, since it uses less digits than its factorization.

55550005555550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151424378 (or 151424373 counting only the distinct ones).

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

The spelling of 55550005555550 in words is "fifty-five trillion, five hundred fifty billion, five million, five hundred fifty-five thousand, five hundred fifty".