80865985206 has 64 divisors (see below), whose sum is σ = 165329438400. Its totient is φ = 26362920960.

The previous prime is 80865985199. The next prime is 80865985231. The reversal of 80865985206 is 60258956808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29500996 + ... + 29503736.

It is an arithmetic number, because the mean of its divisors is an integer number (2583272475).

Almost surely, 2^80865985206 is an apocalyptic number.

80865985206 is an abundant number, since it is smaller than the sum of its proper divisors (84463453194).

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

80865985206 is a wasteful number, since it uses less digits than its factorization.

80865985206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3361.

The product of its (nonzero) digits is 8294400, while the sum is 57.

The spelling of 80865985206 in words is "eighty billion, eight hundred sixty-five million, nine hundred eighty-five thousand, two hundred six".