80161251220 has 24 divisors (see below), whose sum is σ = 168371933184. Its totient is φ = 32058156576.

The previous prime is 80161251187. The next prime is 80161251241. The reversal of 80161251220 is 2215216108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292212 + ... + 495691.

It is an arithmetic number, because the mean of its divisors is an integer number (7015497216).

Almost surely, 2^80161251220 is an apocalyptic number.

It is an amenable number.

80161251220 is an abundant number, since it is smaller than the sum of its proper divisors (88210681964).

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

80161251220 is a wasteful number, since it uses less digits than its factorization.

80161251220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792999 (or 792997 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

Adding to 80161251220 its reverse (2215216108), we get a palindrome (82376467328).

The spelling of 80161251220 in words is "eighty billion, one hundred sixty-one million, two hundred fifty-one thousand, two hundred twenty".