61654045616 has 20 divisors (see below), whose sum is σ = 121479371400. Its totient is φ = 30304530432.

The previous prime is 61654045613. The next prime is 61654045667.

61654045616 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (61654045613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32654801 + ... + 32656688.

It is an arithmetic number, because the mean of its divisors is an integer number (6073968570).

Almost surely, 2^61654045616 is an apocalyptic number.

It is an amenable number.

61654045616 is a deficient number, since it is larger than the sum of its proper divisors (59825325784).

61654045616 is a wasteful number, since it uses less digits than its factorization.

61654045616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65311556 (or 65311550 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 61654045616 in words is "sixty-one billion, six hundred fifty-four million, forty-five thousand, six hundred sixteen".