61686366233811 has 32 divisors (see below), whose sum is σ = 90876361113600. Its totient is φ = 36906358488480.

The previous prime is 61686366233773. The next prime is 61686366233851. The reversal of 61686366233811 is 11833266368616.

It is not a de Polignac number, because 61686366233811 - 2⁶ = 61686366233747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61686366233851) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13901760 + ... + 17794146.

It is an arithmetic number, because the mean of its divisors is an integer number (2839886284800).

Almost surely, 2^{61686366233811} is an apocalyptic number.

61686366233811 is a deficient number, since it is larger than the sum of its proper divisors (29189994879789).

61686366233811 is a wasteful number, since it uses less digits than its factorization.

61686366233811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3898559.

The product of its digits is 26873856, while the sum is 60.

The spelling of 61686366233811 in words is "sixty-one trillion, six hundred eighty-six billion, three hundred sixty-six million, two hundred thirty-three thousand, eight hundred eleven".