126865916720 has 80 divisors (see below), whose sum is σ = 306770424960. Its totient is φ = 48749755392.

The previous prime is 126865916713. The next prime is 126865916731. The reversal of 126865916720 is 27619568621.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37427 + ... + 505106.

It is an arithmetic number, because the mean of its divisors is an integer number (3834630312).

Almost surely, 2^126865916720 is an apocalyptic number.

126865916720 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 126865916720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153385212480).

126865916720 is an abundant number, since it is smaller than the sum of its proper divisors (179904508240).

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

126865916720 is a wasteful number, since it uses less digits than its factorization.

126865916720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542662 (or 542656 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 126865916720 in words is "one hundred twenty-six billion, eight hundred sixty-five million, nine hundred sixteen thousand, seven hundred twenty".