12615701049 has 16 divisors (see below), whose sum is σ = 21359917440. Its totient is φ = 7208971920.

The previous prime is 12615701047. The next prime is 12615701051. The reversal of 12615701049 is 94010751621.

12615701049 is a `hidden beast` number, since 12 + 61 + 570 + 10 + 4 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (12615701047) and next prime (12615701051).

It is not a de Polignac number, because 12615701049 - 2¹ = 12615701047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12615701047) 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, 33374682 + ... + 33375059.

It is an arithmetic number, because the mean of its divisors is an integer number (1334994840).

Almost surely, 2^12615701049 is an apocalyptic number.

It is an amenable number.

12615701049 is a deficient number, since it is larger than the sum of its proper divisors (8744216391).

12615701049 is an equidigital number, since it uses as much as digits as its factorization.

12615701049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66749757 (or 66749751 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 12615701049 in words is "twelve billion, six hundred fifteen million, seven hundred one thousand, forty-nine".