126997838785 has 8 divisors (see below), whose sum is σ = 161361959976. Its totient is φ = 95621902080.

The previous prime is 126997838771. The next prime is 126997838831. The reversal of 126997838785 is 587838799621.

It can be written as a sum of positive squares in 4 ways, for example, as 64653741441 + 62344097344 = 254271^2 + 249688^2 .

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

It is not a de Polignac number, because 126997838785 - 2²⁷ = 126863621057 is a prime.

It is a super-2 number, since 2×126997838785² (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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747046026 + ... + 747046195.

It is an arithmetic number, because the mean of its divisors is an integer number (20170244997).

Almost surely, 2^126997838785 is an apocalyptic number.

It is an amenable number.

126997838785 is a deficient number, since it is larger than the sum of its proper divisors (34364121191).

126997838785 is a wasteful number, since it uses less digits than its factorization.

126997838785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494092243.

The product of its digits is 365783040, while the sum is 73.

The spelling of 126997838785 in words is "one hundred twenty-six billion, nine hundred ninety-seven million, eight hundred thirty-eight thousand, seven hundred eighty-five".