611121777889 has 8 divisors (see below), whose sum is σ = 699456541248. Its totient is φ = 523044927600.

The previous prime is 611121777857. The next prime is 611121777907. The reversal of 611121777889 is 988777121116.

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 611121777889 - 2⁵ = 611121777857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611121777389) 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, 64473187 + ... + 64482664.

It is an arithmetic number, because the mean of its divisors is an integer number (87432067656).

Almost surely, 2^611121777889 is an apocalyptic number.

It is an amenable number.

611121777889 is a deficient number, since it is larger than the sum of its proper divisors (88334763359).

611121777889 is a wasteful number, since it uses less digits than its factorization.

611121777889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128956535.

The product of its digits is 2370816, while the sum is 58.

The spelling of 611121777889 in words is "six hundred eleven billion, one hundred twenty-one million, seven hundred seventy-seven thousand, eight hundred eighty-nine".