126645695139 has 16 divisors (see below), whose sum is σ = 169207281152. Its totient is φ = 84257445888.

The previous prime is 126645695069. The next prime is 126645695147. The reversal of 126645695139 is 931596546621.

It is not a de Polignac number, because 126645695139 - 2²⁴ = 126628917923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126645795139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3346467 + ... + 3384099.

It is an arithmetic number, because the mean of its divisors is an integer number (10575455072).

Almost surely, 2^126645695139 is an apocalyptic number.

126645695139 is a deficient number, since it is larger than the sum of its proper divisors (42561586013).

126645695139 is a wasteful number, since it uses less digits than its factorization.

126645695139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39906.

The product of its digits is 10497600, while the sum is 57.

The spelling of 126645695139 in words is "one hundred twenty-six billion, six hundred forty-five million, six hundred ninety-five thousand, one hundred thirty-nine".