126708449280 has 384 divisors, whose sum is σ = 471748192560. Its totient is φ = 28956426240.

The previous prime is 126708449183. The next prime is 126708449297. The reversal of 126708449280 is 82944807621.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×126708449280² (a number of 23 digits) contains 22 as substring.

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, 24081850 + ... + 24087110.

Almost surely, 2^126708449280 is an apocalyptic number.

126708449280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126708449280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235874096280).

126708449280 is an abundant number, since it is smaller than the sum of its proper divisors (345039743280).

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

126708449280 is an frugal number, since it uses more digits than its factorization.

126708449280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5313 (or 5278 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 126708449280 in words is "one hundred twenty-six billion, seven hundred eight million, four hundred forty-nine thousand, two hundred eighty".