12257880616261 has 16 divisors (see below), whose sum is σ = 14062703089536. Its totient is φ = 10466499162816.

The previous prime is 12257880616253. The next prime is 12257880616279. The reversal of 12257880616261 is 16261608875221.

It is a cyclic number.

It is not a de Polignac number, because 12257880616261 - 2³ = 12257880616253 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 (12257880616361) 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, 8058690 + ... + 9458236.

It is an arithmetic number, because the mean of its divisors is an integer number (878918943096).

Almost surely, 2^{12257880616261} is an apocalyptic number.

It is an amenable number.

12257880616261 is a deficient number, since it is larger than the sum of its proper divisors (1804822473275).

12257880616261 is a wasteful number, since it uses less digits than its factorization.

12257880616261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404348.

The product of its (nonzero) digits is 3870720, while the sum is 55.

The spelling of 12257880616261 in words is "twelve trillion, two hundred fifty-seven billion, eight hundred eighty million, six hundred sixteen thousand, two hundred sixty-one".