12694500645 has 8 divisors (see below), whose sum is σ = 20311201056. Its totient is φ = 6770400336.

The previous prime is 12694500641. The next prime is 12694500649. The reversal of 12694500645 is 54600549621.

It is an interprime number because it is at equal distance from previous prime (12694500641) and next prime (12694500649).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12694500645 - 2² = 12694500641 is a prime.

It is a super-2 number, since 2×12694500645² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12694500597 and 12694500606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12694500641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 423150007 + ... + 423150036.

It is an arithmetic number, because the mean of its divisors is an integer number (2538900132).

Almost surely, 2^12694500645 is an apocalyptic number.

12694500645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12694500645 is a deficient number, since it is larger than the sum of its proper divisors (7616700411).

12694500645 is an equidigital number, since it uses as much as digits as its factorization.

12694500645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846300051.

The product of its (nonzero) digits is 259200, while the sum is 42.

The spelling of 12694500645 in words is "twelve billion, six hundred ninety-four million, five hundred thousand, six hundred forty-five".