12774409540 has 24 divisors (see below), whose sum is σ = 26830406232. Its totient is φ = 5108974080.

The previous prime is 12774409523. The next prime is 12774409541. The reversal of 12774409540 is 4590447721.

It can be written as a sum of positive squares in 4 ways, for example, as 5968489536 + 6805920004 = 77256^2 + 82498^2 .

It is not an unprimeable number, because it can be changed into a prime (12774409541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93342 + ... + 185098.

It is an arithmetic number, because the mean of its divisors is an integer number (1117933593).

Almost surely, 2^12774409540 is an apocalyptic number.

12774409540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12774409540 is an abundant number, since it is smaller than the sum of its proper divisors (14055996692).

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

12774409540 is a wasteful number, since it uses less digits than its factorization.

12774409540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98727 (or 98725 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 12774409540 in words is "twelve billion, seven hundred seventy-four million, four hundred nine thousand, five hundred forty".