280818066213 has 16 divisors (see below), whose sum is σ = 416613572800. Its totient is φ = 186947980560.

The previous prime is 280818066211. The next prime is 280818066227. The reversal of 280818066213 is 312660818082.

280818066213 is a `hidden beast` number, since 2 + 8 + 0 + 8 + 18 + 0 + 6 + 621 + 3 = 666.

It is not a de Polignac number, because 280818066213 - 2¹ = 280818066211 is a prime.

It is a super-2 number, since 2×280818066213² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280818066211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7315603 + ... + 7353888.

It is an arithmetic number, because the mean of its divisors is an integer number (26038348300).

Almost surely, 2^280818066213 is an apocalyptic number.

It is an amenable number.

280818066213 is a deficient number, since it is larger than the sum of its proper divisors (135795506587).

280818066213 is a wasteful number, since it uses less digits than its factorization.

280818066213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14670209 (or 14670203 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 280818066213 in words is "two hundred eighty billion, eight hundred eighteen million, sixty-six thousand, two hundred thirteen".