402606620264 has 8 divisors (see below), whose sum is σ = 754887413010. Its totient is φ = 201303310128.

The previous prime is 402606620243. The next prime is 402606620291. The reversal of 402606620264 is 462026606204.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 396837002500 + 5769617764 = 629950^2 + 75958^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25162913759 + ... + 25162913774.

Almost surely, 2^402606620264 is an apocalyptic number.

It is an amenable number.

402606620264 is a deficient number, since it is larger than the sum of its proper divisors (352280792746).

402606620264 is a wasteful number, since it uses less digits than its factorization.

402606620264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50325827539 (or 50325827535 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 402606620264 in words is "four hundred two billion, six hundred six million, six hundred twenty thousand, two hundred sixty-four".