280130502690 has 24 divisors (see below), whose sum is σ = 728339307228. Its totient is φ = 74701467360.

The previous prime is 280130502677. The next prime is 280130502697. The reversal of 280130502690 is 96205031082.

280130502690 is a `hidden beast` number, since 2 + 80 + 13 + 0 + 502 + 69 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 258178820769 + 21951681921 = 508113^2 + 148161^2 .

It is a super-2 number, since 2×280130502690² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (280130502697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1556280481 + ... + 1556280660.

Almost surely, 2^280130502690 is an apocalyptic number.

280130502690 is an abundant number, since it is smaller than the sum of its proper divisors (448208804538).

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

280130502690 is a wasteful number, since it uses less digits than its factorization.

280130502690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3112561154 (or 3112561151 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 280130502690 in words is "two hundred eighty billion, one hundred thirty million, five hundred two thousand, six hundred ninety".