12477974397 has 16 divisors (see below), whose sum is σ = 19254743040. Its totient is φ = 7040013552.

The previous prime is 12477974389. The next prime is 12477974413. The reversal of 12477974397 is 79347977421.

It is a happy number.

It is not a de Polignac number, because 12477974397 - 2³ = 12477974389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12477974397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12477974357) 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, 3759033 + ... + 3762350.

It is an arithmetic number, because the mean of its divisors is an integer number (1203421440).

Almost surely, 2^12477974397 is an apocalyptic number.

It is an amenable number.

12477974397 is a deficient number, since it is larger than the sum of its proper divisors (6776768643).

12477974397 is an equidigital number, since it uses as much as digits as its factorization.

12477974397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7521472.

The product of its digits is 18670176, while the sum is 60.

The spelling of 12477974397 in words is "twelve billion, four hundred seventy-seven million, nine hundred seventy-four thousand, three hundred ninety-seven".