61798589816 has 16 divisors (see below), whose sum is σ = 115962129240. Its totient is φ = 30875355360.

The previous prime is 61798589803. The next prime is 61798589843. The reversal of 61798589816 is 61898589716.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2981471 + ... + 3002126.

Almost surely, 2^61798589816 is an apocalyptic number.

It is an amenable number.

61798589816 is a deficient number, since it is larger than the sum of its proper divisors (54163539424).

61798589816 is a wasteful number, since it uses less digits than its factorization.

61798589816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5984894 (or 5984890 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 68.

The spelling of 61798589816 in words is "sixty-one billion, seven hundred ninety-eight million, five hundred eighty-nine thousand, eight hundred sixteen".