80507947980 has 288 divisors, whose sum is σ = 251036755200. Its totient is φ = 19213770240.

The previous prime is 80507947963. The next prime is 80507947987. The reversal of 80507947980 is 8974970508.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a self number, because there is not a number n which added to its sum of digits gives 80507947980.

It is not an unprimeable number, because it can be changed into a prime (80507947987) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 47107366 + ... + 47109074.

It is an arithmetic number, because the mean of its divisors is an integer number (871655400).

Almost surely, 2^80507947980 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 80507947980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125518377600).

80507947980 is an abundant number, since it is smaller than the sum of its proper divisors (170528807220).

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

80507947980 is a wasteful number, since it uses less digits than its factorization.

80507947980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845 (or 1812 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 57.

The spelling of 80507947980 in words is "eighty billion, five hundred seven million, nine hundred forty-seven thousand, nine hundred eighty".