276774972648 has 128 divisors (see below), whose sum is σ = 738249552000. Its totient is φ = 86167617536.

The previous prime is 276774972587. The next prime is 276774972659. The reversal of 276774972648 is 846279477672.

It is a super-2 number, since 2×276774972648² (a number of 24 digits) contains 22 as substring.

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, 121765240 + ... + 121767512.

It is an arithmetic number, because the mean of its divisors is an integer number (5767574625).

Almost surely, 2^276774972648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 276774972648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369124776000).

276774972648 is an abundant number, since it is smaller than the sum of its proper divisors (461474579352).

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

276774972648 is a wasteful number, since it uses less digits than its factorization.

276774972648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4451 (or 4447 counting only the distinct ones).

The product of its digits is 398297088, while the sum is 69.

The spelling of 276774972648 in words is "two hundred seventy-six billion, seven hundred seventy-four million, nine hundred seventy-two thousand, six hundred forty-eight".