61216216211 has 8 divisors (see below), whose sum is σ = 61290000000. Its totient is φ = 61142477440.

The previous prime is 61216216129. The next prime is 61216216231. The reversal of 61216216211 is 11261261216.

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 61216216211 - 2¹⁰ = 61216215187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61216216231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3255665 + ... + 3274413.

It is an arithmetic number, because the mean of its divisors is an integer number (7661250000).

Almost surely, 2^61216216211 is an apocalyptic number.

61216216211 is a deficient number, since it is larger than the sum of its proper divisors (73783789).

61216216211 is a wasteful number, since it uses less digits than its factorization.

61216216211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22509.

The product of its digits is 1728, while the sum is 29.

Adding to 61216216211 its reverse (11261261216), we get a palindrome (72477477427).

The spelling of 61216216211 in words is "sixty-one billion, two hundred sixteen million, two hundred sixteen thousand, two hundred eleven".