1081971287952 has 80 divisors (see below), whose sum is σ = 2844698880000. Its totient is φ = 354302163072.

The previous prime is 1081971287927. The next prime is 1081971287983. The reversal of 1081971287952 is 2597821791801.

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, 37699 + ... + 1471517.

It is an arithmetic number, because the mean of its divisors is an integer number (35558736000).

Almost surely, 2^{1081971287952} is an apocalyptic number.

1081971287952 is a gapful number since it is divisible by the number (12) 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 1081971287952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1422349440000).

1081971287952 is an abundant number, since it is smaller than the sum of its proper divisors (1762727592048).

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

1081971287952 is a wasteful number, since it uses less digits than its factorization.

1081971287952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434108 (or 1434102 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 60.

The spelling of 1081971287952 in words is "one trillion, eighty-one billion, nine hundred seventy-one million, two hundred eighty-seven thousand, nine hundred fifty-two".