80929399990 has 32 divisors (see below), whose sum is σ = 148245626880. Its totient is φ = 31804998624.

The previous prime is 80929399979. The next prime is 80929400003. The reversal of 80929399990 is 9999392908.

It is a happy number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 178530 + ... + 440149.

It is an arithmetic number, because the mean of its divisors is an integer number (4632675840).

Almost surely, 2^80929399990 is an apocalyptic number.

80929399990 is a deficient number, since it is larger than the sum of its proper divisors (67316226890).

80929399990 is a wasteful number, since it uses less digits than its factorization.

80929399990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618916.

The product of its (nonzero) digits is 25509168, while the sum is 67.

The spelling of 80929399990 in words is "eighty billion, nine hundred twenty-nine million, three hundred ninety-nine thousand, nine hundred ninety".