80206399656 has 48 divisors (see below), whose sum is σ = 217248158400. Its totient is φ = 26732698272.

The previous prime is 80206399583. The next prime is 80206399667. The reversal of 80206399656 is 65699360208.

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, 713655 + ... + 818361.

It is an arithmetic number, because the mean of its divisors is an integer number (4526003300).

Almost surely, 2^80206399656 is an apocalyptic number.

It is an amenable number.

80206399656 is an abundant number, since it is smaller than the sum of its proper divisors (137041758744).

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

80206399656 is a wasteful number, since it uses less digits than its factorization.

80206399656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115358 (or 115351 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 80206399656 in words is "eighty billion, two hundred six million, three hundred ninety-nine thousand, six hundred fifty-six".