61008833866 has 4 divisors (see below), whose sum is σ = 91513250802. Its totient is φ = 30504416932.

The previous prime is 61008833857. The next prime is 61008833867. The reversal of 61008833866 is 66833880016.

It is a happy number.

61008833866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 51182275225 + 9826558641 = 226235^2 + 99129^2 .

It is not an unprimeable number, because it can be changed into a prime (61008833867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15252208465 + ... + 15252208468.

Almost surely, 2^61008833866 is an apocalyptic number.

61008833866 is a deficient number, since it is larger than the sum of its proper divisors (30504416936).

61008833866 is a wasteful number, since it uses less digits than its factorization.

61008833866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30504416935.

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 61008833866 in words is "sixty-one billion, eight million, eight hundred thirty-three thousand, eight hundred sixty-six".