404780339682 has 24 divisors (see below), whose sum is σ = 885070165980. Its totient is φ = 133688918880.

The previous prime is 404780339671. The next prime is 404780339699. The reversal of 404780339682 is 286933087404.

404780339682 is a `hidden beast` number, since 4 + 0 + 478 + 0 + 3 + 3 + 96 + 82 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 325149707961 + 79630631721 = 570219^2 + 282189^2 .

It is a super-2 number, since 2×404780339682² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103153069 + ... + 103156992.

Almost surely, 2^404780339682 is an apocalyptic number.

404780339682 is an abundant number, since it is smaller than the sum of its proper divisors (480289826298).

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

404780339682 is a wasteful number, since it uses less digits than its factorization.

404780339682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206310178 (or 206310175 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The spelling of 404780339682 in words is "four hundred four billion, seven hundred eighty million, three hundred thirty-nine thousand, six hundred eighty-two".