406636502634 has 12 divisors (see below), whose sum is σ = 881045755746. Its totient is φ = 135545500872.

The previous prime is 406636502611. The next prime is 406636502651. The reversal of 406636502634 is 436205636604.

406636502634 is a `hidden beast` number, since 4 + 0 + 6 + 6 + 3 + 6 + 5 + 0 + 2 + 634 = 666.

It can be written as a sum of positive squares in only one way, i.e., 369234876609 + 37401626025 = 607647^2 + 193395^2 .

It is a super-2 number, since 2×406636502634² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 406636502634.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11295458389 + ... + 11295458424.

Almost surely, 2^406636502634 is an apocalyptic number.

406636502634 is an abundant number, since it is smaller than the sum of its proper divisors (474409253112).

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

406636502634 is a wasteful number, since it uses less digits than its factorization.

406636502634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22590916821 (or 22590916818 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 45.

The spelling of 406636502634 in words is "four hundred six billion, six hundred thirty-six million, five hundred two thousand, six hundred thirty-four".