80702791920 has 240 divisors, whose sum is σ = 283669468992. Its totient is φ = 20522557440.

The previous prime is 80702791909. The next prime is 80702791931. The reversal of 80702791920 is 2919720708.

It is an interprime number because it is at equal distance from previous prime (80702791909) and next prime (80702791931).

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5573490 + ... + 5587950.

Almost surely, 2^80702791920 is an apocalyptic number.

80702791920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80702791920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141834734496).

80702791920 is an abundant number, since it is smaller than the sum of its proper divisors (202966677072).

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

80702791920 is a wasteful number, since it uses less digits than its factorization.

80702791920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14840 (or 14831 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 80702791920 in words is "eighty billion, seven hundred two million, seven hundred ninety-one thousand, nine hundred twenty".