1161442007681 has 8 divisors (see below), whose sum is σ = 1165371322464. Its totient is φ = 1157516039680.

The previous prime is 1161442007659. The next prime is 1161442007701. The reversal of 1161442007681 is 1867002441611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1161442007681 is a prime.

It is a super-2 number, since 2×1161442007681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161442007081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140480 + ... + 1530561.

It is an arithmetic number, because the mean of its divisors is an integer number (145671415308).

Almost surely, 2^{1161442007681} is an apocalyptic number.

It is an amenable number.

1161442007681 is a deficient number, since it is larger than the sum of its proper divisors (3929314783).

1161442007681 is a wasteful number, since it uses less digits than its factorization.

1161442007681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673391.

The product of its (nonzero) digits is 64512, while the sum is 41.

The spelling of 1161442007681 in words is "one trillion, one hundred sixty-one billion, four hundred forty-two million, seven thousand, six hundred eighty-one".