61755574616 has 16 divisors (see below), whose sum is σ = 115806881040. Its totient is φ = 30873739680.

The previous prime is 61755574589. The next prime is 61755574631. The reversal of 61755574616 is 61647555716.

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, 440615 + ... + 563606.

It is an arithmetic number, because the mean of its divisors is an integer number (7237930065).

Almost surely, 2^61755574616 is an apocalyptic number.

It is an amenable number.

61755574616 is a deficient number, since it is larger than the sum of its proper divisors (54051306424).

61755574616 is a wasteful number, since it uses less digits than its factorization.

61755574616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011914 (or 1011910 counting only the distinct ones).

The product of its digits is 5292000, while the sum is 53.

The spelling of 61755574616 in words is "sixty-one billion, seven hundred fifty-five million, five hundred seventy-four thousand, six hundred sixteen".