61787666678716 has 48 divisors (see below), whose sum is σ = 118909243831392. Its totient is φ = 27859191782400.

The previous prime is 61787666678641. The next prime is 61787666678753.

61787666678716 is nontrivially palindromic in base 10.

61787666678716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61787666678716² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61787666678716.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4083310 + ... + 11842666.

It is an arithmetic number, because the mean of its divisors is an integer number (2477275913154).

Almost surely, 2^{61787666678716} is an apocalyptic number.

It is an amenable number.

61787666678716 is a deficient number, since it is larger than the sum of its proper divisors (57121577152676).

61787666678716 is a wasteful number, since it uses less digits than its factorization.

61787666678716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7760830 (or 7760828 counting only the distinct ones).

The product of its digits is 7169347584, while the sum is 82.

The spelling of 61787666678716 in words is "sixty-one trillion, seven hundred eighty-seven billion, six hundred sixty-six million, six hundred seventy-eight thousand, seven hundred sixteen".