61456852568 has 24 divisors (see below), whose sum is σ = 117446844900. Its totient is φ = 30148633632.

The previous prime is 61456852511. The next prime is 61456852573. The reversal of 61456852568 is 86525865416.

61456852568 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1344938 + ... + 1389881.

Almost surely, 2^61456852568 is an apocalyptic number.

It is an amenable number.

61456852568 is a deficient number, since it is larger than the sum of its proper divisors (55989992332).

61456852568 is a wasteful number, since it uses less digits than its factorization.

61456852568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2734931 (or 2734874 counting only the distinct ones).

The product of its digits is 13824000, while the sum is 56.

The spelling of 61456852568 in words is "sixty-one billion, four hundred fifty-six million, eight hundred fifty-two thousand, five hundred sixty-eight".