61305678876 has 96 divisors (see below), whose sum is σ = 155812991040. Its totient is φ = 18647875584.

The previous prime is 61305678853. The next prime is 61305678913. The reversal of 61305678876 is 67887650316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18413980 + ... + 18417308.

It is an arithmetic number, because the mean of its divisors is an integer number (1623051990).

Almost surely, 2^61305678876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61305678876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77906495520).

61305678876 is an abundant number, since it is smaller than the sum of its proper divisors (94507312164).

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

61305678876 is a wasteful number, since it uses less digits than its factorization.

61305678876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4663 (or 4661 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 61305678876 in words is "sixty-one billion, three hundred five million, six hundred seventy-eight thousand, eight hundred seventy-six".