276099278664 has 128 divisors (see below), whose sum is σ = 778515701760. Its totient is φ = 80839680000.

The previous prime is 276099278647. The next prime is 276099278671. The reversal of 276099278664 is 466872990672.

It is a super-2 number, since 2×276099278664² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a junction number, because it is equal to n+sod(n) for n = 276099278595 and 276099278604.

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, 5219629 + ... + 5272259.

It is an arithmetic number, because the mean of its divisors is an integer number (6082153920).

Almost surely, 2^276099278664 is an apocalyptic number.

276099278664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 276099278664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (389257850880).

276099278664 is an abundant number, since it is smaller than the sum of its proper divisors (502416423096).

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

276099278664 is a wasteful number, since it uses less digits than its factorization.

276099278664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53323 (or 53319 counting only the distinct ones).

The product of its (nonzero) digits is 109734912, while the sum is 66.

The spelling of 276099278664 in words is "two hundred seventy-six billion, ninety-nine million, two hundred seventy-eight thousand, six hundred sixty-four".