276388916280 has 128 divisors (see below), whose sum is σ = 867463188480. Its totient is φ = 70376084480.

The previous prime is 276388916267. The next prime is 276388916291. The reversal of 276388916280 is 82619883672.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 366384 + ... + 828863.

It is an arithmetic number, because the mean of its divisors is an integer number (6777056160).

Almost surely, 2^276388916280 is an apocalyptic number.

276388916280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

276388916280 is an abundant number, since it is smaller than the sum of its proper divisors (591074272200).

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

276388916280 is a wasteful number, since it uses less digits than its factorization.

276388916280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195349 (or 1195345 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 276388916280 in words is "two hundred seventy-six billion, three hundred eighty-eight million, nine hundred sixteen thousand, two hundred eighty".