61343788104 has 64 divisors (see below), whose sum is σ = 171150206400. Its totient is φ = 20357834112.

The previous prime is 61343788081. The next prime is 61343788147. The reversal of 61343788104 is 40188734316.

61343788104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 61343788104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 576517 + ... + 674580.

It is an arithmetic number, because the mean of its divisors is an integer number (2674221975).

Almost surely, 2^61343788104 is an apocalyptic number.

It is an amenable number.

61343788104 is an abundant number, since it is smaller than the sum of its proper divisors (109806418296).

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

61343788104 is a wasteful number, since it uses less digits than its factorization.

61343788104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251339 (or 1251329 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 61343788104 in words is "sixty-one billion, three hundred forty-three million, seven hundred eighty-eight thousand, one hundred four".