61561840288233 has 8 divisors (see below), whose sum is σ = 84084464784096. Its totient is φ = 40040221325600.

The previous prime is 61561840288231. The next prime is 61561840288237. The reversal of 61561840288233 is 33288204816516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61561840288233 - 2¹ = 61561840288231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61561840288231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250251383163 + ... + 250251383408.

It is an arithmetic number, because the mean of its divisors is an integer number (10510558098012).

Almost surely, 2^{61561840288233} is an apocalyptic number.

It is an amenable number.

61561840288233 is a deficient number, since it is larger than the sum of its proper divisors (22522624495863).

61561840288233 is a wasteful number, since it uses less digits than its factorization.

61561840288233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500502766615.

The product of its (nonzero) digits is 13271040, while the sum is 57.

The spelling of 61561840288233 in words is "sixty-one trillion, five hundred sixty-one billion, eight hundred forty million, two hundred eighty-eight thousand, two hundred thirty-three".