61216099 has 16 divisors (see below), whose sum is σ = 75340800. Its totient is φ = 48541824.

The previous prime is 61216063. The next prime is 61216153. The reversal of 61216099 is 99061216.

61216099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61216099 - 2¹¹ = 61214051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61216049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2662 + ... + 11380.

It is an arithmetic number, because the mean of its divisors is an integer number (4708800).

Almost surely, 2^61216099 is an apocalyptic number.

61216099 is a deficient number, since it is larger than the sum of its proper divisors (14124701).

61216099 is a wasteful number, since it uses less digits than its factorization.

61216099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8802.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 61216099 is about 7824.0717660308. The cubic root of 61216099 is about 394.1140191538.

The spelling of 61216099 in words is "sixty-one million, two hundred sixteen thousand, ninety-nine".