126391565719441 has 16 divisors (see below), whose sum is σ = 140847073129728. Its totient is φ = 112456161610000.

The previous prime is 126391565719439. The next prime is 126391565719499. The reversal of 126391565719441 is 144917565193621.

It is a cyclic number.

It is not a de Polignac number, because 126391565719441 - 2¹ = 126391565719439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126398565719441) 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, 646796935 + ... + 646992316.

It is an arithmetic number, because the mean of its divisors is an integer number (8802942070608).

Almost surely, 2^{126391565719441} is an apocalyptic number.

126391565719441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126391565719441 is a deficient number, since it is larger than the sum of its proper divisors (14455507410287).

126391565719441 is a wasteful number, since it uses less digits than its factorization.

126391565719441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293789452.

The product of its digits is 48988800, while the sum is 64.

The spelling of 126391565719441 in words is "one hundred twenty-six trillion, three hundred ninety-one billion, five hundred sixty-five million, seven hundred nineteen thousand, four hundred forty-one".