61116213568 has 14 divisors (see below), whose sum is σ = 121277486426. Its totient is φ = 30558106752.

The previous prime is 61116213553. The next prime is 61116213569. The reversal of 61116213568 is 86531261116.

61116213568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 55794219264 + 5321994304 = 236208^2 + 72952^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61116213568.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61116213569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 477470355 + ... + 477470482.

Almost surely, 2^61116213568 is an apocalyptic number.

It is an amenable number.

61116213568 is a deficient number, since it is larger than the sum of its proper divisors (60161272858).

61116213568 is an equidigital number, since it uses as much as digits as its factorization.

61116213568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954940849 (or 954940839 counting only the distinct ones).

The product of its digits is 51840, while the sum is 40.

The spelling of 61116213568 in words is "sixty-one billion, one hundred sixteen million, two hundred thirteen thousand, five hundred sixty-eight".