61369894072 has 16 divisors (see below), whose sum is σ = 120071532240. Its totient is φ = 29350818816.

The previous prime is 61369894021. The next prime is 61369894097. The reversal of 61369894072 is 27049896316.

61369894072 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166765833 + ... + 166766200.

It is an arithmetic number, because the mean of its divisors is an integer number (7504470765).

Almost surely, 2^61369894072 is an apocalyptic number.

It is an amenable number.

61369894072 is a deficient number, since it is larger than the sum of its proper divisors (58701638168).

61369894072 is a wasteful number, since it uses less digits than its factorization.

61369894072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333532062 (or 333532058 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 61369894072 in words is "sixty-one billion, three hundred sixty-nine million, eight hundred ninety-four thousand, seventy-two".