400246202666 has 16 divisors (see below), whose sum is σ = 632038392960. Its totient is φ = 189569095200.

The previous prime is 400246202617. The next prime is 400246202677. The reversal of 400246202666 is 666202642004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242435 + ... + 926966.

It is an arithmetic number, because the mean of its divisors is an integer number (39502399560).

Almost surely, 2^400246202666 is an apocalyptic number.

400246202666 is a deficient number, since it is larger than the sum of its proper divisors (231792190294).

400246202666 is a wasteful number, since it uses less digits than its factorization.

400246202666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178429.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 400246202666 in words is "four hundred billion, two hundred forty-six million, two hundred two thousand, six hundred sixty-six".