12776502740 has 48 divisors (see below), whose sum is σ = 27802792080. Its totient is φ = 4926028800.

The previous prime is 12776502707. The next prime is 12776502743. The reversal of 12776502740 is 4720567721.

It can be written as a sum of positive squares in 8 ways, for example, as 78818884 + 12697683856 = 8878^2 + 112684^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12776502743) 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, 330254 + ... + 366906.

It is an arithmetic number, because the mean of its divisors is an integer number (579224835).

Almost surely, 2^12776502740 is an apocalyptic number.

12776502740 is a gapful number since it is divisible by the number (10) 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 12776502740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13901396040).

12776502740 is an abundant number, since it is smaller than the sum of its proper divisors (15026289340).

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

12776502740 is a wasteful number, since it uses less digits than its factorization.

12776502740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37292 (or 37290 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 41.

The spelling of 12776502740 in words is "twelve billion, seven hundred seventy-six million, five hundred two thousand, seven hundred forty".