61760440816 has 20 divisors (see below), whose sum is σ = 119715141312. Its totient is φ = 30866210816.

The previous prime is 61760440789. The next prime is 61760440829. The reversal of 61760440816 is 61804406716.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 839185 + ... + 909808.

Almost surely, 2^61760440816 is an apocalyptic number.

It is an amenable number.

61760440816 is a deficient number, since it is larger than the sum of its proper divisors (57954700496).

61760440816 is a wasteful number, since it uses less digits than its factorization.

61760440816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751208 (or 1751202 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 61760440816 in words is "sixty-one billion, seven hundred sixty million, four hundred forty thousand, eight hundred sixteen".