12549179149097 has 4 divisors (see below), whose sum is σ = 12633401828100. Its totient is φ = 12464956470096.

The previous prime is 12549179149069. The next prime is 12549179149099. The reversal of 12549179149097 is 79094197194521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 984581892121 + 11564597256976 = 992261^2 + 3400676^2 .

It is a cyclic number.

It is not a de Polignac number, because 12549179149097 - 2⁸ = 12549179148841 is a prime.

It is a super-2 number, since 2×12549179149097² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12549179149099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42111339278 + ... + 42111339575.

It is an arithmetic number, because the mean of its divisors is an integer number (3158350457025).

Almost surely, 2^{12549179149097} is an apocalyptic number.

It is an amenable number.

12549179149097 is a deficient number, since it is larger than the sum of its proper divisors (84222679003).

12549179149097 is an equidigital number, since it uses as much as digits as its factorization.

12549179149097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84222679002.

The product of its (nonzero) digits is 51438240, while the sum is 68.

The spelling of 12549179149097 in words is "twelve trillion, five hundred forty-nine billion, one hundred seventy-nine million, one hundred forty-nine thousand, ninety-seven".