11655421661325 has 24 divisors (see below), whose sum is σ = 20752627698208. Its totient is φ = 5738053740480.

The previous prime is 11655421661291. The next prime is 11655421661347. The reversal of 11655421661325 is 52316612455611.

It is not a de Polignac number, because 11655421661325 - 2¹⁴ = 11655421644941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5977138339 + ... + 5977140288.

Almost surely, 2^{11655421661325} is an apocalyptic number.

11655421661325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11655421661325 is a deficient number, since it is larger than the sum of its proper divisors (9097206036883).

11655421661325 is a wasteful number, since it uses less digits than its factorization.

11655421661325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11954278653 (or 11954278648 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 48.

The spelling of 11655421661325 in words is "eleven trillion, six hundred fifty-five billion, four hundred twenty-one million, six hundred sixty-one thousand, three hundred twenty-five".