80520126720 has 288 divisors, whose sum is σ = 281050850304. Its totient is φ = 19484467200.

The previous prime is 80520126691. The next prime is 80520126761. The reversal of 80520126720 is 2762102508.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28848525 + ... + 28851315.

It is an arithmetic number, because the mean of its divisors is an integer number (975871008).

Almost surely, 2^80520126720 is an apocalyptic number.

80520126720 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 80520126720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140525425152).

80520126720 is an abundant number, since it is smaller than the sum of its proper divisors (200530723584).

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

80520126720 is a wasteful number, since it uses less digits than its factorization.

80520126720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3509 (or 3495 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The spelling of 80520126720 in words is "eighty billion, five hundred twenty million, one hundred twenty-six thousand, seven hundred twenty".