911662489643 has 4 divisors (see below), whose sum is σ = 959644725960. Its totient is φ = 863680253328.

The previous prime is 911662489601. The next prime is 911662489663. The reversal of 911662489643 is 346984266119.

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

It is a cyclic number.

It is not a de Polignac number, because 911662489643 - 2¹⁴ = 911662473259 is a prime.

It is a super-2 number, since 2×911662489643² (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 (911662489663) 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, 23991118130 + ... + 23991118167.

It is an arithmetic number, because the mean of its divisors is an integer number (239911181490).

Almost surely, 2^911662489643 is an apocalyptic number.

911662489643 is a deficient number, since it is larger than the sum of its proper divisors (47982236317).

911662489643 is a wasteful number, since it uses less digits than its factorization.

911662489643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47982236316.

The product of its digits is 13436928, while the sum is 59.

The spelling of 911662489643 in words is "nine hundred eleven billion, six hundred sixty-two million, four hundred eighty-nine thousand, six hundred forty-three".