80325872640 has 880 divisors, whose sum is σ = 317578326912. Its totient is φ = 19290783744.

The previous prime is 80325872639. The next prime is 80325872651. The reversal of 80325872640 is 4627852308.

80325872640 is a `hidden beast` number, since 8 + 0 + 3 + 2 + 587 + 2 + 64 + 0 = 666.

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 79 ways as a sum of consecutive naturals, for example, 253393762 + ... + 253394078.

Almost surely, 2^80325872640 is an apocalyptic number.

80325872640 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 80325872640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158789163456).

80325872640 is an abundant number, since it is smaller than the sum of its proper divisors (237252454272).

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

80325872640 is a wasteful number, since it uses less digits than its factorization.

80325872640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 80325872640 in words is "eighty billion, three hundred twenty-five million, eight hundred seventy-two thousand, six hundred forty".