126893029691 has 8 divisors (see below), whose sum is σ = 130327125600. Its totient is φ = 123459173568.

The previous prime is 126893029687. The next prime is 126893029717. The reversal of 126893029691 is 196920398621.

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

It is a cyclic number.

It is not a de Polignac number, because 126893029691 - 2² = 126893029687 is a prime.

It is a super-2 number, since 2×126893029691² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126893029621) 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 7 ways as a sum of consecutive naturals, for example, 1710335 + ... + 1782983.

It is an arithmetic number, because the mean of its divisors is an integer number (16290890700).

Almost surely, 2^126893029691 is an apocalyptic number.

126893029691 is a deficient number, since it is larger than the sum of its proper divisors (3434095909).

126893029691 is an equidigital number, since it uses as much as digits as its factorization.

126893029691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119893.

The product of its (nonzero) digits is 2519424, while the sum is 56.

The spelling of 126893029691 in words is "one hundred twenty-six billion, eight hundred ninety-three million, twenty-nine thousand, six hundred ninety-one".