2611973905889 has 4 divisors (see below), whose sum is σ = 2611998955200. Its totient is φ = 2611948856580.

The previous prime is 2611973905883. The next prime is 2611973905907. The reversal of 2611973905889 is 9885093791162.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2611973905889 - 2²⁴ = 2611957128673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2611973905883) 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, 12367589 + ... + 12577010.

It is an arithmetic number, because the mean of its divisors is an integer number (652999738800).

Almost surely, 2^{2611973905889} is an apocalyptic number.

It is an amenable number.

2611973905889 is a deficient number, since it is larger than the sum of its proper divisors (25049311).

2611973905889 is a wasteful number, since it uses less digits than its factorization.

2611973905889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25049310.

The product of its (nonzero) digits is 58786560, while the sum is 68.

The spelling of 2611973905889 in words is "two trillion, six hundred eleven billion, nine hundred seventy-three million, nine hundred five thousand, eight hundred eighty-nine".