2432181561 has 16 divisors (see below), whose sum is σ = 3269070720. Its totient is φ = 1608422400.

The previous prime is 2432181559. The next prime is 2432181571. The reversal of 2432181561 is 1651812342.

It is not a de Polignac number, because 2432181561 - 2¹ = 2432181559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2432181511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202011 + ... + 213711.

It is an arithmetic number, because the mean of its divisors is an integer number (204316920).

Almost surely, 2^2432181561 is an apocalyptic number.

It is an amenable number.

2432181561 is a deficient number, since it is larger than the sum of its proper divisors (836889159).

2432181561 is a wasteful number, since it uses less digits than its factorization.

2432181561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12256.

The product of its digits is 11520, while the sum is 33.

The square root of 2432181561 is about 49317.1528071116. The cubic root of 2432181561 is about 1344.8236269974.

The spelling of 2432181561 in words is "two billion, four hundred thirty-two million, one hundred eighty-one thousand, five hundred sixty-one".