126833721695 has 8 divisors (see below), whose sum is σ = 153622900944. Its totient is φ = 100518687424.

The previous prime is 126833721683. The next prime is 126833721797. The reversal of 126833721695 is 596127338621.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126833721695 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 118535654 + ... + 118536723.

It is an arithmetic number, because the mean of its divisors is an integer number (19202862618).

Almost surely, 2^126833721695 is an apocalyptic number.

126833721695 is a deficient number, since it is larger than the sum of its proper divisors (26789179249).

126833721695 is a wasteful number, since it uses less digits than its factorization.

126833721695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237072489.

The product of its digits is 3265920, while the sum is 53.

The spelling of 126833721695 in words is "one hundred twenty-six billion, eight hundred thirty-three million, seven hundred twenty-one thousand, six hundred ninety-five".