80731457740 has 96 divisors (see below), whose sum is σ = 179926943616. Its totient is φ = 30364139520.

The previous prime is 80731457713. The next prime is 80731457749. The reversal of 80731457740 is 4775413708.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (80731457749) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10506700 + ... + 10514380.

It is an arithmetic number, because the mean of its divisors is an integer number (1874238996).

Almost surely, 2^80731457740 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 80731457740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89963471808).

80731457740 is an abundant number, since it is smaller than the sum of its proper divisors (99195485876).

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

80731457740 is a wasteful number, since it uses less digits than its factorization.

80731457740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8099 (or 8097 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 46.

The spelling of 80731457740 in words is "eighty billion, seven hundred thirty-one million, four hundred fifty-seven thousand, seven hundred forty".