126448276991 has 4 divisors (see below), whose sum is σ = 128834093592. Its totient is φ = 124062460392.

The previous prime is 126448276961. The next prime is 126448277023. The reversal of 126448276991 is 199672844621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126448276991 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126448276991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126448276931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1192908221 + ... + 1192908326.

It is an arithmetic number, because the mean of its divisors is an integer number (32208523398).

Almost surely, 2^126448276991 is an apocalyptic number.

126448276991 is a deficient number, since it is larger than the sum of its proper divisors (2385816601).

126448276991 is an equidigital number, since it uses as much as digits as its factorization.

126448276991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385816600.

The product of its digits is 10450944, while the sum is 59.

The spelling of 126448276991 in words is "one hundred twenty-six billion, four hundred forty-eight million, two hundred seventy-six thousand, nine hundred ninety-one".