2061565902 has 48 divisors (see below), whose sum is σ = 4902049152. Its totient is φ = 620966160.

The previous prime is 2061565871. The next prime is 2061565903. The reversal of 2061565902 is 2095651602.

2061565902 is a `hidden beast` number, since 2 + 0 + 6 + 1 + 565 + 90 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2061565903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1893 + ... + 64239.

It is an arithmetic number, because the mean of its divisors is an integer number (102126024).

Almost surely, 2^2061565902 is an apocalyptic number.

2061565902 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2061565902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2451024576).

2061565902 is an abundant number, since it is smaller than the sum of its proper divisors (2840483250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2061565902 is a wasteful number, since it uses less digits than its factorization.

2061565902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62533 (or 62530 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 2061565902 is about 45404.4700662831. The cubic root of 2061565902 is about 1272.7186479876.

The spelling of 2061565902 in words is "two billion, sixty-one million, five hundred sixty-five thousand, nine hundred two".