402670388064 has 96 divisors (see below), whose sum is σ = 1226041318656. Its totient is φ = 113331525120.

The previous prime is 402670388059. The next prime is 402670388093. The reversal of 402670388064 is 460883076204.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×402670388064² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4426707 + ... + 4516754.

It is an arithmetic number, because the mean of its divisors is an integer number (12771263736).

Almost surely, 2^402670388064 is an apocalyptic number.

It is an amenable number.

402670388064 is an abundant number, since it is smaller than the sum of its proper divisors (823370930592).

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

402670388064 is a wasteful number, since it uses less digits than its factorization.

402670388064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8943548 (or 8943540 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 48.

The spelling of 402670388064 in words is "four hundred two billion, six hundred seventy million, three hundred eighty-eight thousand, sixty-four".