406213555635 has 64 divisors (see below), whose sum is σ = 755952721920. Its totient is φ = 206705520000.

The previous prime is 406213555619. The next prime is 406213555661. The reversal of 406213555635 is 536555312604.

406213555635 is a `hidden beast` number, since 4 + 0 + 6 + 2 + 1 + 3 + 5 + 5 + 5 + 635 = 666.

It is not a de Polignac number, because 406213555635 - 2⁴ = 406213555619 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 63 ways as a sum of consecutive naturals, for example, 386416 + ... + 980685.

It is an arithmetic number, because the mean of its divisors is an integer number (11811761280).

Almost surely, 2^406213555635 is an apocalyptic number.

406213555635 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

406213555635 is a deficient number, since it is larger than the sum of its proper divisors (349739166285).

406213555635 is a wasteful number, since it uses less digits than its factorization.

406213555635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367217 (or 1367211 counting only the distinct ones).

The product of its (nonzero) digits is 1620000, while the sum is 45.

The spelling of 406213555635 in words is "four hundred six billion, two hundred thirteen million, five hundred fifty-five thousand, six hundred thirty-five".