2061599265 has 96 divisors (see below), whose sum is σ = 4144608000. Its totient is φ = 936898560.

The previous prime is 2061599257. The next prime is 2061599279. The reversal of 2061599265 is 5629951602.

It is a happy number.

2061599265 is a `hidden beast` number, since 2 + 0 + 615 + 9 + 9 + 26 + 5 = 666.

It is not a de Polignac number, because 2061599265 - 2³ = 2061599257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2061599265.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3441436 + ... + 3442034.

It is an arithmetic number, because the mean of its divisors is an integer number (43173000).

Almost surely, 2^2061599265 is an apocalyptic number.

It is an amenable number.

2061599265 is an abundant number, since it is smaller than the sum of its proper divisors (2083008735).

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

2061599265 is a wasteful number, since it uses less digits than its factorization.

2061599265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047 (or 1044 counting only the distinct ones).

The product of its (nonzero) digits is 291600, while the sum is 45.

The square root of 2061599265 is about 45404.8374625436. The cubic root of 2061599265 is about 1272.7255135589.

The spelling of 2061599265 in words is "two billion, sixty-one million, five hundred ninety-nine thousand, two hundred sixty-five".