402664642626 has 16 divisors (see below), whose sum is σ = 805473857664. Its totient is φ = 134197452144.

The previous prime is 402664642619. The next prime is 402664642643. The reversal of 402664642626 is 626246466204.

It is a super-2 number, since 2×402664642626² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5987626 + ... + 6054501.

It is an arithmetic number, because the mean of its divisors is an integer number (50342116104).

Almost surely, 2^402664642626 is an apocalyptic number.

402664642626 is an abundant number, since it is smaller than the sum of its proper divisors (402809215038).

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

402664642626 is a wasteful number, since it uses less digits than its factorization.

402664642626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12047705.

The product of its (nonzero) digits is 3981312, while the sum is 48.

The spelling of 402664642626 in words is "four hundred two billion, six hundred sixty-four million, six hundred forty-two thousand, six hundred twenty-six".