215352003156666 has 64 divisors (see below), whose sum is σ = 458036508672000. Its totient is φ = 67309893604800.

The previous prime is 215352003156611. The next prime is 215352003156727. The reversal of 215352003156666 is 666651300253512.

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, 20517045 + ... + 29183096.

It is an arithmetic number, because the mean of its divisors is an integer number (7156820448000).

Almost surely, 2^{215352003156666} is an apocalyptic number.

215352003156666 is an abundant number, since it is smaller than the sum of its proper divisors (242684505515334).

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

215352003156666 is a wasteful number, since it uses less digits than its factorization.

215352003156666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49700555.

The product of its (nonzero) digits is 5832000, while the sum is 51.

The spelling of 215352003156666 in words is "two hundred fifteen trillion, three hundred fifty-two billion, three million, one hundred fifty-six thousand, six hundred sixty-six".