126256446765 has 28 divisors (see below), whose sum is σ = 227157695964. Its totient is φ = 67336769664.

The previous prime is 126256446707. The next prime is 126256446773. The reversal of 126256446765 is 567644652621.

126256446765 is a `hidden beast` number, since 1 + 2 + 6 + 2 + 564 + 4 + 6 + 76 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22918629321 + 103337817444 = 151389^2 + 321462^2 .

It is not a de Polignac number, because 126256446765 - 2¹⁹ = 126255922477 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 17315484 + ... + 17322773.

Almost surely, 2^126256446765 is an apocalyptic number.

126256446765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126256446765 is a deficient number, since it is larger than the sum of its proper divisors (100901249199).

126256446765 is an frugal number, since it uses more digits than its factorization.

126256446765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34638280 (or 34638265 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 54.

The spelling of 126256446765 in words is "one hundred twenty-six billion, two hundred fifty-six million, four hundred forty-six thousand, seven hundred sixty-five".