126815446408 has 96 divisors (see below), whose sum is σ = 279773066880. Its totient is φ = 52770009600.

The previous prime is 126815446391. The next prime is 126815446411. The reversal of 126815446408 is 804644518621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191853598 + ... + 191854258.

It is an arithmetic number, because the mean of its divisors is an integer number (2914302780).

Almost surely, 2^126815446408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126815446408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139886533440).

126815446408 is an abundant number, since it is smaller than the sum of its proper divisors (152957620472).

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

126815446408 is an frugal number, since it uses more digits than its factorization.

126815446408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 49.

The spelling of 126815446408 in words is "one hundred twenty-six billion, eight hundred fifteen million, four hundred forty-six thousand, four hundred eight".