9626542512889 has 3 divisors (see below), whose sum is σ = 9626545615557. Its totient is φ = 9626539410222.

The previous prime is 9626542512887. The next prime is 9626542512941. The reversal of 9626542512889 is 9882152456269.

The square root of 9626542512889 is 3102667.

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

9626542512889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 is not a de Polignac number, because 9626542512889 - 2¹ = 9626542512887 is a prime.

It is a super-2 number, since 2×9626542512889² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9626542512887) 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, 1551334 + ... + 4654000.

It is an arithmetic number, because the mean of its divisors is an integer number (3208848538519).

Almost surely, 2^{9626542512889} is an apocalyptic number.

9626542512889 is the 3102667-th square number.

9626542512889 is the 1551334-th centered octagonal number.

It is an amenable number.

9626542512889 is a deficient number, since it is larger than the sum of its proper divisors (3102668).

9626542512889 is an frugal number, since it uses more digits than its factorization.

9626542512889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6205334 (or 3102667 counting only the distinct ones).

The product of its digits is 149299200, while the sum is 67.

The spelling of 9626542512889 in words is "nine trillion, six hundred twenty-six billion, five hundred forty-two million, five hundred twelve thousand, eight hundred eighty-nine".