126846721812 has 24 divisors (see below), whose sum is σ = 296335337536. Its totient is φ = 42230861568.

The previous prime is 126846721759. The next prime is 126846721843. The reversal of 126846721812 is 218127648621.

It is a happy number.

It is a super-3 number, since 3×126846721812³ (a number of 34 digits) contains 333 as substring.

It is a congruent 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, 6412093 + ... + 6431844.

Almost surely, 2^126846721812 is an apocalyptic number.

126846721812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

126846721812 is an abundant number, since it is smaller than the sum of its proper divisors (169488615724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126846721812 is a wasteful number, since it uses less digits than its factorization.

126846721812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12844767 (or 12844765 counting only the distinct ones).

The product of its digits is 516096, while the sum is 48.

The spelling of 126846721812 in words is "one hundred twenty-six billion, eight hundred forty-six million, seven hundred twenty-one thousand, eight hundred twelve".