126266637765 has 16 divisors (see below), whose sum is σ = 202916611008. Its totient is φ = 67045543296.

The previous prime is 126266637733. The next prime is 126266637773. The reversal of 126266637765 is 567736662621.

It is not a de Polignac number, because 126266637765 - 2⁵ = 126266637733 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18537952 + ... + 18544761.

It is an arithmetic number, because the mean of its divisors is an integer number (12682288188).

Almost surely, 2^126266637765 is an apocalyptic number.

126266637765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126266637765 is a deficient number, since it is larger than the sum of its proper divisors (76649973243).

126266637765 is a wasteful number, since it uses less digits than its factorization.

126266637765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37082948.

The product of its digits is 22861440, while the sum is 57.

The spelling of 126266637765 in words is "one hundred twenty-six billion, two hundred sixty-six million, six hundred thirty-seven thousand, seven hundred sixty-five".