61695064311 has 4 divisors (see below), whose sum is σ = 82260085752. Its totient is φ = 41130042872.

The previous prime is 61695064303. The next prime is 61695064367. The reversal of 61695064311 is 11346059616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61695064311 - 2³ = 61695064303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61695064391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10282510716 + ... + 10282510721.

It is an arithmetic number, because the mean of its divisors is an integer number (20565021438).

Almost surely, 2^61695064311 is an apocalyptic number.

61695064311 is a deficient number, since it is larger than the sum of its proper divisors (20565021441).

61695064311 is a wasteful number, since it uses less digits than its factorization.

61695064311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20565021440.

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 61695064311 in words is "sixty-one billion, six hundred ninety-five million, sixty-four thousand, three hundred eleven".