609989281091 has 8 divisors (see below), whose sum is σ = 611246970000. Its totient is φ = 608731734240.

The previous prime is 609989281049. The next prime is 609989281183. The reversal of 609989281091 is 190182989906.

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

It is a cyclic number.

It is not a de Polignac number, because 609989281091 - 2¹⁰ = 609989280067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609989241091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15279905 + ... + 15319773.

It is an arithmetic number, because the mean of its divisors is an integer number (76405871250).

Almost surely, 2^609989281091 is an apocalyptic number.

609989281091 is a deficient number, since it is larger than the sum of its proper divisors (1257688909).

609989281091 is a wasteful number, since it uses less digits than its factorization.

609989281091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71029.

The product of its (nonzero) digits is 5038848, while the sum is 62.

The spelling of 609989281091 in words is "six hundred nine billion, nine hundred eighty-nine million, two hundred eighty-one thousand, ninety-one".