126893397913 has 4 divisors (see below), whose sum is σ = 126898201908. Its totient is φ = 126888593920.

The previous prime is 126893397901. The next prime is 126893397937. The reversal of 126893397913 is 319793398621.

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 58577552784 + 68315845129 = 242028^2 + 261373^2 .

It is a cyclic number.

It is not a de Polignac number, because 126893397913 - 2²⁹ = 126356527001 is a prime.

It is a super-2 number, since 2×126893397913² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126893397973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2362156 + ... + 2415277.

It is an arithmetic number, because the mean of its divisors is an integer number (31724550477).

Almost surely, 2^126893397913 is an apocalyptic number.

It is an amenable number.

126893397913 is a deficient number, since it is larger than the sum of its proper divisors (4803995).

126893397913 is an equidigital number, since it uses as much as digits as its factorization.

126893397913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4803994.

The product of its digits is 13226976, while the sum is 61.

The spelling of 126893397913 in words is "one hundred twenty-six billion, eight hundred ninety-three million, three hundred ninety-seven thousand, nine hundred thirteen".