61240707885 has 24 divisors (see below), whose sum is σ = 113982706656. Its totient is φ = 27995751840.

The previous prime is 61240707859. The next prime is 61240707889. The reversal of 61240707885 is 58870704216.

It is not a de Polignac number, because 61240707885 - 2⁶ = 61240707821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61240707889) 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 23 ways as a sum of consecutive naturals, for example, 41659611 + ... + 41661080.

It is an arithmetic number, because the mean of its divisors is an integer number (4749279444).

Almost surely, 2^61240707885 is an apocalyptic number.

It is an amenable number.

61240707885 is a deficient number, since it is larger than the sum of its proper divisors (52741998771).

61240707885 is a wasteful number, since it uses less digits than its factorization.

61240707885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83320713 (or 83320706 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 48.

The spelling of 61240707885 in words is "sixty-one billion, two hundred forty million, seven hundred seven thousand, eight hundred eighty-five".