3655223432261 has 8 divisors (see below), whose sum is σ = 3692377682400. Its totient is φ = 3618135002160.

The previous prime is 3655223432249. The next prime is 3655223432281. The reversal of 3655223432261 is 1622343225563.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3655223432261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3655223432281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16343375 + ... + 16565516.

It is an arithmetic number, because the mean of its divisors is an integer number (461547210300).

Almost surely, 2^{3655223432261} is an apocalyptic number.

It is an amenable number.

3655223432261 is a deficient number, since it is larger than the sum of its proper divisors (37154250139).

3655223432261 is a wasteful number, since it uses less digits than its factorization.

3655223432261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32910019.

The product of its digits is 1555200, while the sum is 44.

The spelling of 3655223432261 in words is "three trillion, six hundred fifty-five billion, two hundred twenty-three million, four hundred thirty-two thousand, two hundred sixty-one".