12254039779 has 16 divisors (see below), whose sum is σ = 12698090496. Its totient is φ = 11817216000.

The previous prime is 12254039771. The next prime is 12254039867. The reversal of 12254039779 is 97793045221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12254039779 - 2³ = 12254039771 is a prime.

It is a super-2 number, since 2×12254039779² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12254039771) 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, 4576189 + ... + 4578865.

It is an arithmetic number, because the mean of its divisors is an integer number (793630656).

Almost surely, 2^12254039779 is an apocalyptic number.

12254039779 is a deficient number, since it is larger than the sum of its proper divisors (444050717).

12254039779 is a wasteful number, since it uses less digits than its factorization.

12254039779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3966.

The product of its (nonzero) digits is 952560, while the sum is 49.

The spelling of 12254039779 in words is "twelve billion, two hundred fifty-four million, thirty-nine thousand, seven hundred seventy-nine".