126434346640 has 40 divisors (see below), whose sum is σ = 335954122560. Its totient is φ = 43348918656.

The previous prime is 126434346637. The next prime is 126434346659. The reversal of 126434346640 is 46643434621.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112887250 + ... + 112888369.

It is an arithmetic number, because the mean of its divisors is an integer number (8398853064).

Almost surely, 2^126434346640 is an apocalyptic number.

126434346640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126434346640 is an abundant number, since it is smaller than the sum of its proper divisors (209519775920).

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

126434346640 is a wasteful number, since it uses less digits than its factorization.

126434346640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225775639 (or 225775633 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 43.

The spelling of 126434346640 in words is "one hundred twenty-six billion, four hundred thirty-four million, three hundred forty-six thousand, six hundred forty".