12390691245 has 16 divisors (see below), whose sum is σ = 20029490880. Its totient is φ = 6540240384.

The previous prime is 12390691237. The next prime is 12390691253. The reversal of 12390691245 is 54219609321.

It is an interprime number because it is at equal distance from previous prime (12390691237) and next prime (12390691253).

It is not a de Polignac number, because 12390691245 - 2³ = 12390691237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12390691197 and 12390691206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4256515 + ... + 4259424.

It is an arithmetic number, because the mean of its divisors is an integer number (1251843180).

Almost surely, 2^12390691245 is an apocalyptic number.

12390691245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12390691245 is a deficient number, since it is larger than the sum of its proper divisors (7638799635).

12390691245 is an equidigital number, since it uses as much as digits as its factorization.

12390691245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8516044.

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 12390691245 in words is "twelve billion, three hundred ninety million, six hundred ninety-one thousand, two hundred forty-five".