126343478920 has 64 divisors (see below), whose sum is σ = 290955551040. Its totient is φ = 49349932800.

The previous prime is 126343478909. The next prime is 126343478957. The reversal of 126343478920 is 29874343621.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

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 15 ways as a sum of consecutive naturals, for example, 10539330 + ... + 10551310.

It is an arithmetic number, because the mean of its divisors is an integer number (4546180485).

Almost surely, 2^126343478920 is an apocalyptic number.

126343478920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126343478920 is an abundant number, since it is smaller than the sum of its proper divisors (164612072120).

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

126343478920 is a wasteful number, since it uses less digits than its factorization.

126343478920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18166 (or 18162 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 126343478920 in words is "one hundred twenty-six billion, three hundred forty-three million, four hundred seventy-eight thousand, nine hundred twenty".