126865091213 has 16 divisors (see below), whose sum is σ = 155381525760. Its totient is φ = 101202431616.

The previous prime is 126865091203. The next prime is 126865091231. The reversal of 126865091213 is 312190568621.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 126865091213 - 2¹⁰ = 126865090189 is a prime.

It is a super-2 number, since 2×126865091213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126865091203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10642448 + ... + 10654361.

It is an arithmetic number, because the mean of its divisors is an integer number (9711345360).

Almost surely, 2^126865091213 is an apocalyptic number.

It is an amenable number.

126865091213 is a deficient number, since it is larger than the sum of its proper divisors (28516434547).

126865091213 is a wasteful number, since it uses less digits than its factorization.

126865091213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21296876.

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 126865091213 in words is "one hundred twenty-six billion, eight hundred sixty-five million, ninety-one thousand, two hundred thirteen".