126787729893 has 16 divisors (see below), whose sum is σ = 184427798016. Its totient is φ = 76837181040.

The previous prime is 126787729891. The next prime is 126787729897. The reversal of 126787729893 is 398927787621.

It is not a de Polignac number, because 126787729893 - 2¹ = 126787729891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126787729891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 656496 + ... + 827382.

It is an arithmetic number, because the mean of its divisors is an integer number (11526737376).

Almost surely, 2^126787729893 is an apocalyptic number.

It is an amenable number.

126787729893 is a deficient number, since it is larger than the sum of its proper divisors (57640068123).

126787729893 is a wasteful number, since it uses less digits than its factorization.

126787729893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193384.

The product of its digits is 128024064, while the sum is 69.

The spelling of 126787729893 in words is "one hundred twenty-six billion, seven hundred eighty-seven million, seven hundred twenty-nine thousand, eight hundred ninety-three".