405586779012 has 48 divisors (see below), whose sum is σ = 1051808591680. Its totient is φ = 135158652864.

The previous prime is 405586779011. The next prime is 405586779047. The reversal of 405586779012 is 210977685504.

405586779012 is a `hidden beast` number, since 4 + 0 + 558 + 6 + 7 + 79 + 0 + 12 = 666.

It is a super-2 number, since 2×405586779012² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 405586779012.

It is not an unprimeable number, because it can be changed into a prime (405586779011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114538 + ... + 907905.

Almost surely, 2^405586779012 is an apocalyptic number.

It is an amenable number.

405586779012 is an abundant number, since it is smaller than the sum of its proper divisors (646221812668).

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

405586779012 is a wasteful number, since it uses less digits than its factorization.

405586779012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026129 (or 1026121 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The spelling of 405586779012 in words is "four hundred five billion, five hundred eighty-six million, seven hundred seventy-nine thousand, twelve".