2569769540 has 24 divisors (see below), whose sum is σ = 5811633240. Its totient is φ = 948837888.

The previous prime is 2569769539. The next prime is 2569769549. The reversal of 2569769540 is 459679652.

It can be written as a sum of positive squares in 4 ways, for example, as 290089024 + 2279680516 = 17032^2 + 47746^2 .

It is not an unprimeable number, because it can be changed into a prime (2569769549) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4941605 + ... + 4942124.

It is an arithmetic number, because the mean of its divisors is an integer number (242151385).

Almost surely, 2^2569769540 is an apocalyptic number.

2569769540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2569769540 is an abundant number, since it is smaller than the sum of its proper divisors (3241863700).

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

2569769540 is a wasteful number, since it uses less digits than its factorization.

2569769540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9883751 (or 9883749 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 53.

The square root of 2569769540 is about 50692.8943738666. The cubic root of 2569769540 is about 1369.7187232232.

The spelling of 2569769540 in words is "two billion, five hundred sixty-nine million, seven hundred sixty-nine thousand, five hundred forty".