126512411981312 has 160 divisors (see below), whose sum is σ = 306940753373760. Its totient is φ = 51030209495040.

The previous prime is 126512411981311. The next prime is 126512411981359. The reversal of 126512411981312 is 213189114215621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126512411981311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14015762 + ... + 21200622.

It is an arithmetic number, because the mean of its divisors is an integer number (1918379708586).

Almost surely, 2^{126512411981312} 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 126512411981312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153470376686880).

126512411981312 is an abundant number, since it is smaller than the sum of its proper divisors (180428341392448).

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

126512411981312 is an frugal number, since it uses more digits than its factorization.

126512411981312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7184937 (or 7184887 counting only the distinct ones).

The product of its digits is 207360, while the sum is 47.

The spelling of 126512411981312 in words is "one hundred twenty-six trillion, five hundred twelve billion, four hundred eleven million, nine hundred eighty-one thousand, three hundred twelve".