11655252612440 has 64 divisors (see below), whose sum is σ = 26381189052000. Its totient is φ = 4634267581440.

The previous prime is 11655252612403. The next prime is 11655252612449. The reversal of 11655252612440 is 4421625255611.

It is a Cunningham number, because it is equal to 3413979²-1.

It is a junction number, because it is equal to n+sod(n) for n = 11655252612391 and 11655252612400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11655252612449) 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, 5974466 + ... + 7681454.

Almost surely, 2^{11655252612440} is an apocalyptic number.

11655252612440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11655252612440 is an abundant number, since it is smaller than the sum of its proper divisors (14725936439560).

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

11655252612440 is a wasteful number, since it uses less digits than its factorization.

11655252612440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708020 (or 1708016 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 44.

The spelling of 11655252612440 in words is "eleven trillion, six hundred fifty-five billion, two hundred fifty-two million, six hundred twelve thousand, four hundred forty".