402666012036 has 18 divisors (see below), whose sum is σ = 1017850197182. Its totient is φ = 134222004000.

The previous prime is 402666011987. The next prime is 402666012143. The reversal of 402666012036 is 630210666204.

It can be written as a sum of positive squares in only one way, i.e., 401266503936 + 1399508100 = 633456^2 + 37410^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 11185167001 = 402666012036 / (4 + 0 + 2 + 6 + 6 + 6 + 0 + 1 + 2 + 0 + 3 + 6).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5592583465 + ... + 5592583536.

Almost surely, 2^402666012036 is an apocalyptic number.

It is an amenable number.

402666012036 is an abundant number, since it is smaller than the sum of its proper divisors (615184185146).

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

402666012036 is a wasteful number, since it uses less digits than its factorization.

402666012036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11185167011 (or 11185167006 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The spelling of 402666012036 in words is "four hundred two billion, six hundred sixty-six million, twelve thousand, thirty-six".