61716515311655 has 8 divisors (see below), whose sum is σ = 74060461038192. Its totient is φ = 49372783806528.

The previous prime is 61716515311609. The next prime is 61716515311657. The reversal of 61716515311655 is 55611351561716.

61716515311655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61716515311655 - 2²⁶ = 61716448202791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61716515311597 and 61716515311606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61716515311657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52920854 + ... + 54074483.

It is an arithmetic number, because the mean of its divisors is an integer number (9257557629774).

Almost surely, 2^{61716515311655} is an apocalyptic number.

61716515311655 is a deficient number, since it is larger than the sum of its proper divisors (12343945726537).

61716515311655 is a wasteful number, since it uses less digits than its factorization.

61716515311655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107110705.

The product of its digits is 2835000, while the sum is 53.

The spelling of 61716515311655 in words is "sixty-one trillion, seven hundred sixteen billion, five hundred fifteen million, three hundred eleven thousand, six hundred fifty-five".