126881471828 has 12 divisors (see below), whose sum is σ = 222331323060. Its totient is φ = 63358236672.

The previous prime is 126881471777. The next prime is 126881471833. The reversal of 126881471828 is 828174188621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 52765765264 + 74115706564 = 229708^2 + 272242^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20621351 + ... + 20627502.

It is an arithmetic number, because the mean of its divisors is an integer number (18527610255).

Almost surely, 2^126881471828 is an apocalyptic number.

It is an amenable number.

126881471828 is a deficient number, since it is larger than the sum of its proper divisors (95449851232).

126881471828 is a wasteful number, since it uses less digits than its factorization.

126881471828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41249626 (or 41249624 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 56.

The spelling of 126881471828 in words is "one hundred twenty-six billion, eight hundred eighty-one million, four hundred seventy-one thousand, eight hundred twenty-eight".