126745327709 has 24 divisors (see below), whose sum is σ = 173214403488. Its totient is φ = 91165465440.

The previous prime is 126745327697. The next prime is 126745327733. The reversal of 126745327709 is 907723547621.

It is not a de Polignac number, because 126745327709 - 2⁴ = 126745327693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126745327739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9037187 + ... + 9051200.

It is an arithmetic number, because the mean of its divisors is an integer number (7217266812).

Almost surely, 2^126745327709 is an apocalyptic number.

It is an amenable number.

126745327709 is a deficient number, since it is larger than the sum of its proper divisors (46469075779).

126745327709 is a wasteful number, since it uses less digits than its factorization.

126745327709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18088425 (or 18088418 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 53.

It can be divided in two parts, 126745 and 327709, that added together give a palindrome (454454).

The spelling of 126745327709 in words is "one hundred twenty-six billion, seven hundred forty-five million, three hundred twenty-seven thousand, seven hundred nine".