2642132561 has 2 divisors, whose sum is σ = 2642132562. Its totient is φ = 2642132560.

The previous prime is 2642132531. The next prime is 2642132579. The reversal of 2642132561 is 1652312462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1658118400 + 984014161 = 40720^2 + 31369^2 .

It is a cyclic number.

It is not a de Polignac number, because 2642132561 - 2⁶ = 2642132497 is a prime.

It is a super-3 number, since 3×2642132561³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2642132531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321066280 + 1321066281.

It is an arithmetic number, because the mean of its divisors is an integer number (1321066281).

Almost surely, 2^2642132561 is an apocalyptic number.

It is an amenable number.

2642132561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642132561 is an equidigital number, since it uses as much as digits as its factorization.

2642132561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 2642132561 is about 51401.6785815405. The cubic root of 2642132561 is about 1382.4566897587.

The spelling of 2642132561 in words is "two billion, six hundred forty-two million, one hundred thirty-two thousand, five hundred sixty-one".