126161444365 has 12 divisors (see below), whose sum is σ = 166407988572. Its totient is φ = 91753777280.

The previous prime is 126161444363. The next prime is 126161444369. The reversal of 126161444365 is 563444161621.

It can be written as a sum of positive squares in 2 ways, for example, as 71249489476 + 54911954889 = 266926^2 + 234333^2 .

It is not a de Polignac number, because 126161444365 - 2¹ = 126161444363 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 (126161444363) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104265052 + ... + 104266261.

It is an arithmetic number, because the mean of its divisors is an integer number (13867332381).

Almost surely, 2^126161444365 is an apocalyptic number.

It is an amenable number.

126161444365 is a deficient number, since it is larger than the sum of its proper divisors (40246544207).

126161444365 is a wasteful number, since it uses less digits than its factorization.

126161444365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208531340 (or 208531329 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The spelling of 126161444365 in words is "one hundred twenty-six billion, one hundred sixty-one million, four hundred forty-four thousand, three hundred sixty-five".