402666605250 has 128 divisors (see below), whose sum is σ = 1236992020992. Its totient is φ = 84958214400.

The previous prime is 402666605197. The next prime is 402666605267. The reversal of 402666605250 is 52506666204.

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 63 ways as a sum of consecutive naturals, for example, 2881689 + ... + 3018188.

It is an arithmetic number, because the mean of its divisors is an integer number (9664000164).

Almost surely, 2^402666605250 is an apocalyptic number.

402666605250 is an abundant number, since it is smaller than the sum of its proper divisors (834325415742).

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

402666605250 is a wasteful number, since it uses less digits than its factorization.

402666605250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5899917 (or 5899907 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 402666605250 in words is "four hundred two billion, six hundred sixty-six million, six hundred five thousand, two hundred fifty".