215053545450555 has 192 divisors, whose sum is σ = 471435035984640. Its totient is φ = 88415642714112.

The previous prime is 215053545450481. The next prime is 215053545450571. The reversal of 215053545450555 is 555054545350512.

215053545450555 is a `hidden beast` number, since 2 + 1 + 5 + 0 + 5 + 3 + 5 + 45 + 45 + 0 + 555 = 666.

It is not a de Polignac number, because 215053545450555 - 2⁹ = 215053545450043 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7925437 + ... + 22201793.

It is an arithmetic number, because the mean of its divisors is an integer number (2455390812420).

Almost surely, 2^{215053545450555} is an apocalyptic number.

215053545450555 is an abundant number, since it is smaller than the sum of its proper divisors (256381490534085).

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

215053545450555 is a wasteful number, since it uses less digits than its factorization.

215053545450555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14276518 (or 14276515 counting only the distinct ones).

The product of its (nonzero) digits is 37500000, while the sum is 54.

The spelling of 215053545450555 in words is "two hundred fifteen trillion, fifty-three billion, five hundred forty-five million, four hundred fifty thousand, five hundred fifty-five".