126963293185 has 4 divisors (see below), whose sum is σ = 152355951828. Its totient is φ = 101570634544.

The previous prime is 126963293137. The next prime is 126963293201. The reversal of 126963293185 is 581392369621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 581392369621 = 7 ⋅83056052803.

It can be written as a sum of positive squares in 2 ways, for example, as 15208808976 + 111754484209 = 123324^2 + 334297^2 .

It is a cyclic number.

It is not a de Polignac number, because 126963293185 - 2²⁵ = 126929738753 is a prime.

It is a super-2 number, since 2×126963293185² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12696329314 + ... + 12696329323.

It is an arithmetic number, because the mean of its divisors is an integer number (38088987957).

Almost surely, 2^126963293185 is an apocalyptic number.

It is an amenable number.

126963293185 is a deficient number, since it is larger than the sum of its proper divisors (25392658643).

126963293185 is an equidigital number, since it uses as much as digits as its factorization.

126963293185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25392658642.

The product of its digits is 4199040, while the sum is 55.

The spelling of 126963293185 in words is "one hundred twenty-six billion, nine hundred sixty-three million, two hundred ninety-three thousand, one hundred eighty-five".