3522640657426 has 12 divisors (see below), whose sum is σ = 5807990175246. Its totient is φ = 1601200298720.

The previous prime is 3522640657391. The next prime is 3522640657427. The reversal of 3522640657426 is 6247560462253.

It can be written as a sum of positive squares in only one way, i.e., 2824755851401 + 697884806025 = 1680701^2 + 835395^2 .

It is not an unprimeable number, because it can be changed into a prime (3522640657427) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7278182935 + ... + 7278183418.

Almost surely, 2^{3522640657426} is an apocalyptic number.

3522640657426 is a deficient number, since it is larger than the sum of its proper divisors (2285349517820).

3522640657426 is a wasteful number, since it uses less digits than its factorization.

3522640657426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14556366377 (or 14556366366 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 52.

The spelling of 3522640657426 in words is "three trillion, five hundred twenty-two billion, six hundred forty million, six hundred fifty-seven thousand, four hundred twenty-six".