126665712480 has 96 divisors (see below), whose sum is σ = 399491416800. Its totient is φ = 33735667712.

The previous prime is 126665712451. The next prime is 126665712491. The reversal of 126665712480 is 84217566621.

126665712480 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 225226 + ... + 551414.

It is an arithmetic number, because the mean of its divisors is an integer number (4161368925).

Almost surely, 2^126665712480 is an apocalyptic number.

126665712480 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 126665712480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199745708400).

126665712480 is an abundant number, since it is smaller than the sum of its proper divisors (272825704320).

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

126665712480 is a wasteful number, since it uses less digits than its factorization.

126665712480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327016 (or 327008 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 126665712480 in words is "one hundred twenty-six billion, six hundred sixty-five million, seven hundred twelve thousand, four hundred eighty".