216554056530 has 64 divisors (see below), whose sum is σ = 594356797440. Its totient is φ = 49466407104.

The previous prime is 216554056501. The next prime is 216554056571. The reversal of 216554056530 is 35650455612.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 31 + ... + 658109.

It is an arithmetic number, because the mean of its divisors is an integer number (9286824960).

Almost surely, 2^216554056530 is an apocalyptic number.

216554056530 is an abundant number, since it is smaller than the sum of its proper divisors (377802740910).

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

216554056530 is a wasteful number, since it uses less digits than its factorization.

216554056530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659663.

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 216554056530 in words is "two hundred sixteen billion, five hundred fifty-four million, fifty-six thousand, five hundred thirty".