61561442335 has 8 divisors (see below), whose sum is σ = 73959936336. Its totient is φ = 49191683520.

The previous prime is 61561442333. The next prime is 61561442351. The reversal of 61561442335 is 53324416516.

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

It is not a de Polignac number, because 61561442335 - 2¹ = 61561442333 is a prime.

It is a super-2 number, since 2×61561442335² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61561442333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7179081 + ... + 7187650.

It is an arithmetic number, because the mean of its divisors is an integer number (9244992042).

Almost surely, 2^61561442335 is an apocalyptic number.

61561442335 is a deficient number, since it is larger than the sum of its proper divisors (12398494001).

61561442335 is a wasteful number, since it uses less digits than its factorization.

61561442335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14367593.

The product of its digits is 259200, while the sum is 40.

The spelling of 61561442335 in words is "sixty-one billion, five hundred sixty-one million, four hundred forty-two thousand, three hundred thirty-five".