2065969961 has 4 divisors (see below), whose sum is σ = 2253785424. Its totient is φ = 1878154500.

The previous prime is 2065969933. The next prime is 2065969973. The reversal of 2065969961 is 1699695602.

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 a de Polignac number, because none of the positive numbers 2^k-2065969961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2065969261) 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, 93907715 + ... + 93907736.

It is an arithmetic number, because the mean of its divisors is an integer number (563446356).

Almost surely, 2^2065969961 is an apocalyptic number.

It is an amenable number.

2065969961 is a deficient number, since it is larger than the sum of its proper divisors (187815463).

2065969961 is a wasteful number, since it uses less digits than its factorization.

2065969961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187815462.

The product of its (nonzero) digits is 1574640, while the sum is 53.

The square root of 2065969961 is about 45452.9422700005. The cubic root of 2065969961 is about 1273.6242931233.

The spelling of 2065969961 in words is "two billion, sixty-five million, nine hundred sixty-nine thousand, nine hundred sixty-one".