12354643645655 has 8 divisors (see below), whose sum is σ = 15170353127952. Its totient is φ = 9653861081088.

The previous prime is 12354643645613. The next prime is 12354643645661. The reversal of 12354643645655 is 55654634645321.

12354643645655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12354643645655 - 2²⁰ = 12354642597079 is a prime.

It is a super-2 number, since 2×12354643645655² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12354643645594 and 12354643645603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28731729194 + ... + 28731729623.

It is an arithmetic number, because the mean of its divisors is an integer number (1896294140994).

Almost surely, 2^{12354643645655} is an apocalyptic number.

12354643645655 is a deficient number, since it is larger than the sum of its proper divisors (2815709482297).

12354643645655 is an equidigital number, since it uses as much as digits as its factorization.

12354643645655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57463458865.

The product of its digits is 155520000, while the sum is 59.

The spelling of 12354643645655 in words is "twelve trillion, three hundred fifty-four billion, six hundred forty-three million, six hundred forty-five thousand, six hundred fifty-five".