1144647971376 has 160 divisors (see below), whose sum is σ = 3649001448960. Its totient is φ = 301088212992.

The previous prime is 1144647971371. The next prime is 1144647971413. The reversal of 1144647971376 is 6731797464411.

It is not an unprimeable number, because it can be changed into a prime (1144647971371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1309756 + ... + 2001188.

It is an arithmetic number, because the mean of its divisors is an integer number (22806259056).

Almost surely, 2^{1144647971376} is an apocalyptic number.

1144647971376 is a gapful number since it is divisible by the number (16) 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 1144647971376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1824500724480).

1144647971376 is an abundant number, since it is smaller than the sum of its proper divisors (2504353477584).

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

1144647971376 is a wasteful number, since it uses less digits than its factorization.

1144647971376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691843 (or 691837 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 60.

The spelling of 1144647971376 in words is "one trillion, one hundred forty-four billion, six hundred forty-seven million, nine hundred seventy-one thousand, three hundred seventy-six".