80872390656 has 480 divisors, whose sum is σ = 253212890560. Its totient is φ = 25798901760.

The previous prime is 80872390601. The next prime is 80872390657. The reversal of 80872390656 is 65609327808.

It is a happy number.

It is a super-2 number, since 2×80872390656² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80872390657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1325776866 + ... + 1325776926.

Almost surely, 2^80872390656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80872390656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126606445280).

80872390656 is an abundant number, since it is smaller than the sum of its proper divisors (172340499904).

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

80872390656 is an frugal number, since it uses more digits than its factorization.

80872390656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 80872390656 in words is "eighty billion, eight hundred seventy-two million, three hundred ninety thousand, six hundred fifty-six".