280642006860 has 48 divisors (see below), whose sum is σ = 827155392000. Its totient is φ = 70899033024.

The previous prime is 280642006847. The next prime is 280642006871. The reversal of 280642006860 is 68600246082.

It is a super-3 number, since 3×280642006860³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123087460 + ... + 123089739.

It is an arithmetic number, because the mean of its divisors is an integer number (17232404000).

Almost surely, 2^280642006860 is an apocalyptic number.

280642006860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

280642006860 is an abundant number, since it is smaller than the sum of its proper divisors (546513385140).

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

280642006860 is a wasteful number, since it uses less digits than its factorization.

280642006860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246177230 (or 246177228 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 280642006860 in words is "two hundred eighty billion, six hundred forty-two million, six thousand, eight hundred sixty".