8243440268634 has 40 divisors (see below), whose sum is σ = 18472072962420. Its totient is φ = 2747715165504.

The previous prime is 8243440268629. The next prime is 8243440268653. The reversal of 8243440268634 is 4368620443428.

8243440268634 is a `hidden beast` number, since 8 + 2 + 4 + 344 + 0 + 268 + 6 + 34 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8090639804025 + 152800464609 = 2844405^2 + 390897^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3706672 + ... + 5497844.

Almost surely, 2^{8243440268634} is an apocalyptic number.

8243440268634 is an abundant number, since it is smaller than the sum of its proper divisors (10228632693786).

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

8243440268634 is a wasteful number, since it uses less digits than its factorization.

8243440268634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819596 (or 1819587 counting only the distinct ones).

The product of its (nonzero) digits is 21233664, while the sum is 54.

The spelling of 8243440268634 in words is "eight trillion, two hundred forty-three billion, four hundred forty million, two hundred sixty-eight thousand, six hundred thirty-four".