3640443146634 has 32 divisors (see below), whose sum is σ = 8321576065920. Its totient is φ = 1040056218432.

The previous prime is 3640443146633. The next prime is 3640443146657. The reversal of 3640443146634 is 4366413440463.

It is not an unprimeable number, because it can be changed into a prime (3640443146633) 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, 2303569 + ... + 3547860.

It is an arithmetic number, because the mean of its divisors is an integer number (260049252060).

Almost surely, 2^{3640443146634} is an apocalyptic number.

3640443146634 is an abundant number, since it is smaller than the sum of its proper divisors (4681132919286).

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

3640443146634 is a wasteful number, since it uses less digits than its factorization.

3640443146634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5866254.

The product of its (nonzero) digits is 5971968, while the sum is 48.

The spelling of 3640443146634 in words is "three trillion, six hundred forty billion, four hundred forty-three million, one hundred forty-six thousand, six hundred thirty-four".