2065551061 has 8 divisors (see below), whose sum is σ = 2368973504. Its totient is φ = 1764214560.

The previous prime is 2065550999. The next prime is 2065551083. The reversal of 2065551061 is 1601555602.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2065551061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065551661) 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, 519360 + ... + 523321.

It is an arithmetic number, because the mean of its divisors is an integer number (296121688).

Almost surely, 2^2065551061 is an apocalyptic number.

It is an amenable number.

2065551061 is a deficient number, since it is larger than the sum of its proper divisors (303422443).

2065551061 is a wasteful number, since it uses less digits than its factorization.

2065551061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042971.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 2065551061 is about 45448.3339738653. Note that the first 3 decimals coincide. The cubic root of 2065551061 is about 1273.5382064764.

The spelling of 2065551061 in words is "two billion, sixty-five million, five hundred fifty-one thousand, sixty-one".