126161316523 has 16 divisors (see below), whose sum is σ = 138408855552. Its totient is φ = 114044004000.

The previous prime is 126161316517. The next prime is 126161316527. The reversal of 126161316523 is 325613161621.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126161316523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126161316527) 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, 5625793 + ... + 5648173.

It is an arithmetic number, because the mean of its divisors is an integer number (8650553472).

Almost surely, 2^126161316523 is an apocalyptic number.

126161316523 is a deficient number, since it is larger than the sum of its proper divisors (12247539029).

126161316523 is a wasteful number, since it uses less digits than its factorization.

126161316523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25266.

The product of its digits is 38880, while the sum is 37.

The spelling of 126161316523 in words is "one hundred twenty-six billion, one hundred sixty-one million, three hundred sixteen thousand, five hundred twenty-three".