6666206400402 has 16 divisors (see below), whose sum is σ = 13762490633472. Its totient is φ = 2150389161360.

The previous prime is 6666206400391. The next prime is 6666206400571. The reversal of 6666206400402 is 2040046026666.

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 7 ways as a sum of consecutive naturals, for example, 17919909493 + ... + 17919909864.

It is an arithmetic number, because the mean of its divisors is an integer number (860155664592).

Almost surely, 2^{6666206400402} is an apocalyptic number.

6666206400402 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

6666206400402 is an abundant number, since it is smaller than the sum of its proper divisors (7096284233070).

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

6666206400402 is a wasteful number, since it uses less digits than its factorization.

6666206400402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35839819393.

The product of its (nonzero) digits is 497664, while the sum is 42.

The spelling of 6666206400402 in words is "six trillion, six hundred sixty-six billion, two hundred six million, four hundred thousand, four hundred two".