12399049653 has 4 divisors (see below), whose sum is σ = 16532066208. Its totient is φ = 8266033100.

The previous prime is 12399049651. The next prime is 12399049657. The reversal of 12399049653 is 35694099321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35694099321 = 3 ⋅11898033107.

It is a cyclic number.

It is not a de Polignac number, because 12399049653 - 2¹ = 12399049651 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12399049596 and 12399049605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12399049651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2066508273 + ... + 2066508278.

It is an arithmetic number, because the mean of its divisors is an integer number (4133016552).

Almost surely, 2^12399049653 is an apocalyptic number.

It is an amenable number.

12399049653 is a deficient number, since it is larger than the sum of its proper divisors (4133016555).

12399049653 is an equidigital number, since it uses as much as digits as its factorization.

12399049653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4133016554.

The product of its (nonzero) digits is 1574640, while the sum is 51.

The spelling of 12399049653 in words is "twelve billion, three hundred ninety-nine million, forty-nine thousand, six hundred fifty-three".