13129235197 has 8 divisors (see below), whose sum is σ = 14190224216. Its totient is φ = 12075538752.

The previous prime is 13129235183. The next prime is 13129235219. The reversal of 13129235197 is 79153292131.

It can be written as a sum of positive squares in 4 ways, for example, as 7761796 + 13121473401 = 2786^2 + 114549^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 13129235197 - 2²³ = 13120846589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13129232197) 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, 1819398 + ... + 1826599.

It is an arithmetic number, because the mean of its divisors is an integer number (1773778027).

Almost surely, 2^13129235197 is an apocalyptic number.

It is an amenable number.

13129235197 is a deficient number, since it is larger than the sum of its proper divisors (1060989019).

13129235197 is a wasteful number, since it uses less digits than its factorization.

13129235197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646287.

The product of its digits is 102060, while the sum is 43.

The spelling of 13129235197 in words is "thirteen billion, one hundred twenty-nine million, two hundred thirty-five thousand, one hundred ninety-seven".