12144904695 has 80 divisors (see below), whose sum is σ = 27142967808. Its totient is φ = 5047220160.

The previous prime is 12144904663. The next prime is 12144904697. The reversal of 12144904695 is 59640944121.

It is not a de Polignac number, because 12144904695 - 2⁵ = 12144904663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12144904695.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12144904697) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 163539 + ... + 225908.

Almost surely, 2^12144904695 is an apocalyptic number.

12144904695 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12144904695 is an abundant number, since it is smaller than the sum of its proper divisors (14998063113).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12144904695 is a wasteful number, since it uses less digits than its factorization.

12144904695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389482 (or 389473 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 12144904695 in words is "twelve billion, one hundred forty-four million, nine hundred four thousand, six hundred ninety-five".