280996557122 has 54 divisors (see below), whose sum is σ = 452296078227. Its totient is φ = 130917973032.

The previous prime is 280996557119. The next prime is 280996557151. The reversal of 280996557122 is 221755699082.

It can be written as a sum of positive squares in only one way, i.e., 140498278561 + 140498278561 = 374831^2 + 374831^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=374831.

It is a super-2 number, since 2×280996557122² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 741415529 + ... + 741415907.

Almost surely, 2^280996557122 is an apocalyptic number.

280996557122 is a deficient number, since it is larger than the sum of its proper divisors (171299521105).

280996557122 is an frugal number, since it uses more digits than its factorization.

280996557122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 56.

The spelling of 280996557122 in words is "two hundred eighty billion, nine hundred ninety-six million, five hundred fifty-seven thousand, one hundred twenty-two".