80902992720 has 80 divisors (see below), whose sum is σ = 273599220672. Its totient is φ = 19612846080.

The previous prime is 80902992661. The next prime is 80902992739. The reversal of 80902992720 is 2729920908.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 80902992720.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15319897 + ... + 15325176.

Almost surely, 2^80902992720 is an apocalyptic number.

80902992720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80902992720 is an abundant number, since it is smaller than the sum of its proper divisors (192696227952).

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

80902992720 is a wasteful number, since it uses less digits than its factorization.

80902992720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30645100 (or 30645094 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 48.

The spelling of 80902992720 in words is "eighty billion, nine hundred two million, nine hundred ninety-two thousand, seven hundred twenty".