280027778007 has 16 divisors (see below), whose sum is σ = 378514949120. Its totient is φ = 184113300672.

The previous prime is 280027778003. The next prime is 280027778027. The reversal of 280027778007 is 700877720082.

It is not a de Polignac number, because 280027778007 - 2² = 280027778003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280027778003) 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, 3203994 + ... + 3290232.

It is an arithmetic number, because the mean of its divisors is an integer number (23657184320).

Almost surely, 2^280027778007 is an apocalyptic number.

280027778007 is a deficient number, since it is larger than the sum of its proper divisors (98487171113).

280027778007 is a wasteful number, since it uses less digits than its factorization.

280027778007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101142.

The product of its (nonzero) digits is 614656, while the sum is 48.

The spelling of 280027778007 in words is "two hundred eighty billion, twenty-seven million, seven hundred seventy-eight thousand, seven".