61766641670550 has 48 divisors (see below), whose sum is σ = 153192153616320. Its totient is φ = 16469934308640.

The previous prime is 61766641670453. The next prime is 61766641670551. The reversal of 61766641670550 is 5507614666716.

61766641670550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61766641670551) 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 23 ways as a sum of consecutive naturals, for example, 12507220 + ... + 16732119.

It is an arithmetic number, because the mean of its divisors is an integer number (3191503200340).

Almost surely, 2^{61766641670550} is an apocalyptic number.

61766641670550 is an abundant number, since it is smaller than the sum of its proper divisors (91425511945770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61766641670550 is a wasteful number, since it uses less digits than its factorization.

61766641670550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29253437 (or 29253432 counting only the distinct ones).

The product of its (nonzero) digits is 38102400, while the sum is 60.

The spelling of 61766641670550 in words is "sixty-one trillion, seven hundred sixty-six billion, six hundred forty-one million, six hundred seventy thousand, five hundred fifty".