80611940720 has 40 divisors (see below), whose sum is σ = 190599430320. Its totient is φ = 31698252800.

The previous prime is 80611940719. The next prime is 80611940729. The reversal of 80611940720 is 2704911608.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80611940729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8534681 + ... + 8544120.

It is an arithmetic number, because the mean of its divisors is an integer number (4764985758).

Almost surely, 2^80611940720 is an apocalyptic number.

80611940720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80611940720 is an abundant number, since it is smaller than the sum of its proper divisors (109987489600).

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

80611940720 is a wasteful number, since it uses less digits than its factorization.

80611940720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17078873 (or 17078867 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The spelling of 80611940720 in words is "eighty billion, six hundred eleven million, nine hundred forty thousand, seven hundred twenty".