8011022641 has 4 divisors (see below), whose sum is σ = 8012690532. Its totient is φ = 8009354752.

The previous prime is 8011022639. The next prime is 8011022651. The reversal of 8011022641 is 1462201108.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 686230416 + 7324792225 = 26196^2 + 85585^2 .

It is a cyclic number.

It is not a de Polignac number, because 8011022641 - 2¹ = 8011022639 is a prime.

It is a super-2 number, since 2×8011022641² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8011022651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826720 + ... + 836353.

It is an arithmetic number, because the mean of its divisors is an integer number (2003172633).

Almost surely, 2^8011022641 is an apocalyptic number.

8011022641 is the 56608-th centered pentagonal number.

It is an amenable number.

8011022641 is a deficient number, since it is larger than the sum of its proper divisors (1667891).

8011022641 is a wasteful number, since it uses less digits than its factorization.

8011022641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1667890.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 8011022641 is about 89504.3163260856. The cubic root of 8011022641 is about 2000.9181318691.

Adding to 8011022641 its reverse (1462201108), we get a palindrome (9473223749).

The spelling of 8011022641 in words is "eight billion, eleven million, twenty-two thousand, six hundred forty-one".