80135257122 has 90 divisors (see below), whose sum is σ = 187903146123. Its totient is φ = 25523949528.

The previous prime is 80135257093. The next prime is 80135257127. The reversal of 80135257122 is 22175253108.

80135257122 is a `hidden beast` number, since 8 + 0 + 1 + 3 + 525 + 7 + 122 = 666.

It can be written as a sum of positive squares in only one way, i.e., 40067628561 + 40067628561 = 200169^2 + 200169^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=200169.

It is not an unprimeable number, because it can be changed into a prime (80135257127) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 82869483 + ... + 82870449.

Almost surely, 2^80135257122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80135257122

80135257122 is an abundant number, since it is smaller than the sum of its proper divisors (107767889001).

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

80135257122 is an frugal number, since it uses more digits than its factorization.

80135257122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994 (or 995 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The spelling of 80135257122 in words is "eighty billion, one hundred thirty-five million, two hundred fifty-seven thousand, one hundred twenty-two".