12145738698 has 16 divisors (see below), whose sum is σ = 26990530560. Its totient is φ = 4048579548.

The previous prime is 12145738691. The next prime is 12145738721. The reversal of 12145738698 is 89683754121.

12145738698 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 573 + 8 + 69 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 224921087 = 12145738698 / (1 + 2 + 1 + 4 + 5 + 7 + 3 + 8 + 6 + 9 + 8).

It is not an unprimeable number, because it can be changed into a prime (12145738691) 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, 112460490 + ... + 112460597.

It is an arithmetic number, because the mean of its divisors is an integer number (1686908160).

Almost surely, 2^12145738698 is an apocalyptic number.

12145738698 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12145738698 is an abundant number, since it is smaller than the sum of its proper divisors (14844791862).

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

12145738698 is a wasteful number, since it uses less digits than its factorization.

12145738698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224921098 (or 224921092 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 12145738698 in words is "twelve billion, one hundred forty-five million, seven hundred thirty-eight thousand, six hundred ninety-eight".