126821681276 has 6 divisors (see below), whose sum is σ = 221937942240. Its totient is φ = 63410840636.

The previous prime is 126821681257. The next prime is 126821681281. The reversal of 126821681276 is 672186128621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15852710156 + ... + 15852710163.

It is an arithmetic number, because the mean of its divisors is an integer number (36989657040).

Almost surely, 2^126821681276 is an apocalyptic number.

It is an amenable number.

126821681276 is a deficient number, since it is larger than the sum of its proper divisors (95116260964).

126821681276 is a wasteful number, since it uses less digits than its factorization.

126821681276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31705420323 (or 31705420321 counting only the distinct ones).

The product of its digits is 774144, while the sum is 50.

The spelling of 126821681276 in words is "one hundred twenty-six billion, eight hundred twenty-one million, six hundred eighty-one thousand, two hundred seventy-six".