400262064660 has 72 divisors (see below), whose sum is σ = 1214387909280. Its totient is φ = 106713724608.

The previous prime is 400262064623. The next prime is 400262064733. The reversal of 400262064660 is 66460262004.

400262064660 is a `hidden beast` number, since 4 + 0 + 0 + 2 + 6 + 2 + 0 + 646 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 614731 + ... + 1085549.

It is an arithmetic number, because the mean of its divisors is an integer number (16866498740).

Almost surely, 2^400262064660 is an apocalyptic number.

It is an amenable number.

400262064660 is an abundant number, since it is smaller than the sum of its proper divisors (814125844620).

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

400262064660 is a wasteful number, since it uses less digits than its factorization.

400262064660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475557 (or 475552 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The spelling of 400262064660 in words is "four hundred billion, two hundred sixty-two million, sixty-four thousand, six hundred sixty".