12190976845 has 16 divisors (see below), whose sum is σ = 15492299760. Its totient is φ = 9177554944.

The previous prime is 12190976767. The next prime is 12190976849. The reversal of 12190976845 is 54867909121.

It can be written as a sum of positive squares in 8 ways, for example, as 506880196 + 11684096649 = 22514^2 + 108093^2 .

It is a cyclic number.

It is not a de Polignac number, because 12190976845 - 2⁹ = 12190976333 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12190976792 and 12190976801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12190976849) 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, 982641 + ... + 994969.

It is an arithmetic number, because the mean of its divisors is an integer number (968268735).

Almost surely, 2^12190976845 is an apocalyptic number.

It is an amenable number.

12190976845 is a deficient number, since it is larger than the sum of its proper divisors (3301322915).

12190976845 is a wasteful number, since it uses less digits than its factorization.

12190976845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23984.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The spelling of 12190976845 in words is "twelve billion, one hundred ninety million, nine hundred seventy-six thousand, eight hundred forty-five".