3640651573361 has 4 divisors (see below), whose sum is σ = 3971619898224. Its totient is φ = 3309683248500.

The previous prime is 3640651573213. The next prime is 3640651573379. The reversal of 3640651573361 is 1633751560463.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3640651573361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3640651573381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165484162415 + ... + 165484162436.

It is an arithmetic number, because the mean of its divisors is an integer number (992904974556).

Almost surely, 2^{3640651573361} is an apocalyptic number.

It is an amenable number.

3640651573361 is a deficient number, since it is larger than the sum of its proper divisors (330968324863).

3640651573361 is a wasteful number, since it uses less digits than its factorization.

3640651573361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330968324862.

The product of its (nonzero) digits is 4082400, while the sum is 50.

The spelling of 3640651573361 in words is "three trillion, six hundred forty billion, six hundred fifty-one million, five hundred seventy-three thousand, three hundred sixty-one".