564166646661402 has 48 divisors (see below), whose sum is σ = 1240254320947200. Its totient is φ = 185322616579296.

The previous prime is 564166646661379. The next prime is 564166646661451. The reversal of 564166646661402 is 204166646661465.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 564166646661402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 827820658 + ... + 828501885.

It is an arithmetic number, because the mean of its divisors is an integer number (25838631686400).

Almost surely, 2^{564166646661402} is an apocalyptic number.

564166646661402 is an abundant number, since it is smaller than the sum of its proper divisors (676087674285798).

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

564166646661402 is a wasteful number, since it uses less digits than its factorization.

564166646661402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656322827 (or 1656322824 counting only the distinct ones).

The product of its (nonzero) digits is 179159040, while the sum is 63.

Adding to 564166646661402 its sum of digits (63), we get a palindrome (564166646661465).

The spelling of 564166646661402 in words is "five hundred sixty-four trillion, one hundred sixty-six billion, six hundred forty-six million, six hundred sixty-one thousand, four hundred two".