12640410774 has 40 divisors (see below), whose sum is σ = 28337775048. Its totient is φ = 4211403840.

The previous prime is 12640410767. The next prime is 12640410781. The reversal of 12640410774 is 47701404621.

It is a happy number.

12640410774 is a `hidden beast` number, since 1 + 2 + 640 + 4 + 1 + 0 + 7 + 7 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (12640410767) and next prime (12640410781).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 332029 + ... + 368135.

Almost surely, 2^12640410774 is an apocalyptic number.

12640410774 is an abundant number, since it is smaller than the sum of its proper divisors (15697364274).

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

12640410774 is a wasteful number, since it uses less digits than its factorization.

12640410774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38282 (or 38273 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The spelling of 12640410774 in words is "twelve billion, six hundred forty million, four hundred ten thousand, seven hundred seventy-four".