80568905990 has 8 divisors (see below), whose sum is σ = 145024030800. Its totient is φ = 32227562392.

The previous prime is 80568905981. The next prime is 80568906007. The reversal of 80568905990 is 9950986508.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×80568905990² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4028445290 + ... + 4028445309.

It is an arithmetic number, because the mean of its divisors is an integer number (18128003850).

Almost surely, 2^80568905990 is an apocalyptic number.

80568905990 is a deficient number, since it is larger than the sum of its proper divisors (64455124810).

80568905990 is a wasteful number, since it uses less digits than its factorization.

80568905990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8056890606.

The product of its (nonzero) digits is 6998400, while the sum is 59.

The spelling of 80568905990 in words is "eighty billion, five hundred sixty-eight million, nine hundred five thousand, nine hundred ninety".