1127013668881 has 3 divisors (see below), whose sum is σ = 1127014730491. Its totient is φ = 1127012607272.

The previous prime is 1127013668873. The next prime is 1127013668887. The reversal of 1127013668881 is 1888663107211.

The square root of 1127013668881 is 1061609.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 858233635281 + 268780033600 = 926409^2 + 518440^2 .

It is not a de Polignac number, because 1127013668881 - 2³ = 1127013668873 is a prime.

It is a super-2 number, since 2×1127013668881² (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 (1127013668887) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 530805 + ... + 1592413.

Almost surely, 2^{1127013668881} is an apocalyptic number.

1127013668881 is the 1061609-th square number.

1127013668881 is the 530805-th centered octagonal number.

It is an amenable number.

1127013668881 is a deficient number, since it is larger than the sum of its proper divisors (1061610).

1127013668881 is an frugal number, since it uses more digits than its factorization.

1127013668881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123218 (or 1061609 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 52.

The spelling of 1127013668881 in words is "one trillion, one hundred twenty-seven billion, thirteen million, six hundred sixty-eight thousand, eight hundred eighty-one".