10557215055 has 32 divisors (see below), whose sum is σ = 18872118720. Its totient is φ = 5599393920.

The previous prime is 10557215029. The next prime is 10557215087. The reversal of 10557215055 is 55051275501.

10557215055 is a `hidden beast` number, since 1 + 0 + 557 + 2 + 1 + 50 + 55 = 666.

It is not a de Polignac number, because 10557215055 - 2¹⁴ = 10557198671 is a prime.

It is a super-2 number, since 2×10557215055² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191592 + ... + 240461.

It is an arithmetic number, because the mean of its divisors is an integer number (589753710).

Almost surely, 2^10557215055 is an apocalyptic number.

10557215055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10557215055 is a deficient number, since it is larger than the sum of its proper divisors (8314903665).

10557215055 is a wasteful number, since it uses less digits than its factorization.

10557215055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432248 (or 432242 counting only the distinct ones).

The product of its (nonzero) digits is 43750, while the sum is 36.

The spelling of 10557215055 in words is "ten billion, five hundred fifty-seven million, two hundred fifteen thousand, fifty-five".