61284669616608 has 96 divisors (see below), whose sum is σ = 167868762792192. Its totient is φ = 19539799910400.

The previous prime is 61284669616607. The next prime is 61284669616673. The reversal of 61284669616608 is 80661696648216.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61284669616601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298597863 + ... + 298803033.

It is an arithmetic number, because the mean of its divisors is an integer number (1748632945752).

Almost surely, 2^{61284669616608} is an apocalyptic number.

It is an amenable number.

61284669616608 is an abundant number, since it is smaller than the sum of its proper divisors (106584093175584).

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

61284669616608 is a wasteful number, since it uses less digits than its factorization.

61284669616608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340488 (or 340480 counting only the distinct ones).

The product of its (nonzero) digits is 214990848, while the sum is 69.

The spelling of 61284669616608 in words is "sixty-one trillion, two hundred eighty-four billion, six hundred sixty-nine million, six hundred sixteen thousand, six hundred eight".