61521602007116 has 12 divisors (see below), whose sum is σ = 108109537138680. Its totient is φ = 30633162824640.

The previous prime is 61521602007109. The next prime is 61521602007167. The reversal of 61521602007116 is 61170020612516.

It is a self number, because there is not a number n which added to its sum of digits gives 61521602007116.

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, 31909543646 + ... + 31909545573.

It is an arithmetic number, because the mean of its divisors is an integer number (9009128094890).

Almost surely, 2^{61521602007116} is an apocalyptic number.

It is an amenable number.

61521602007116 is a deficient number, since it is larger than the sum of its proper divisors (46587935131564).

61521602007116 is a wasteful number, since it uses less digits than its factorization.

61521602007116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63819089464 (or 63819089462 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The spelling of 61521602007116 in words is "sixty-one trillion, five hundred twenty-one billion, six hundred two million, seven thousand, one hundred sixteen".