2566361061 has 48 divisors (see below), whose sum is σ = 4208405760. Its totient is φ = 1492767360.

The previous prime is 2566361029. The next prime is 2566361117. The reversal of 2566361061 is 1601636652.

2566361061 is a `hidden beast` number, since 2 + 5 + 6 + 636 + 10 + 6 + 1 = 666.

It is not a de Polignac number, because 2566361061 - 2⁵ = 2566361029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2566361461) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 494100 + ... + 499266.

It is an arithmetic number, because the mean of its divisors is an integer number (87675120).

Almost surely, 2^2566361061 is an apocalyptic number.

It is an amenable number.

2566361061 is a deficient number, since it is larger than the sum of its proper divisors (1642044699).

2566361061 is a wasteful number, since it uses less digits than its factorization.

2566361061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5386 (or 5383 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 2566361061 is about 50659.2643156215. The cubic root of 2566361061 is about 1369.1128682254.

The spelling of 2566361061 in words is "two billion, five hundred sixty-six million, three hundred sixty-one thousand, sixty-one".