61116217011 has 32 divisors (see below), whose sum is σ = 93756787200. Its totient is φ = 39300498720.

The previous prime is 61116216991. The next prime is 61116217037. The reversal of 61116217011 is 11071261116.

61116217011 is a `hidden beast` number, since 611 + 16 + 21 + 7 + 0 + 11 = 666.

It is not a de Polignac number, because 61116217011 - 2¹¹ = 61116214963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (61116217091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 769420 + ... + 845126.

It is an arithmetic number, because the mean of its divisors is an integer number (2929899600).

Almost surely, 2^61116217011 is an apocalyptic number.

61116217011 is a deficient number, since it is larger than the sum of its proper divisors (32640570189).

61116217011 is a wasteful number, since it uses less digits than its factorization.

61116217011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76776 (or 76770 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 27.

Adding to 61116217011 its reverse (11071261116), we get a palindrome (72187478127).

The spelling of 61116217011 in words is "sixty-one billion, one hundred sixteen million, two hundred seventeen thousand, eleven".