61305760077 has 8 divisors (see below), whose sum is σ = 86549308416. Its totient is φ = 38466359232.

The previous prime is 61305760073. The next prime is 61305760099. The reversal of 61305760077 is 77006750316.

61305760077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61305760077 - 2² = 61305760073 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61305760073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601036813 + ... + 601036914.

It is an arithmetic number, because the mean of its divisors is an integer number (10818663552).

Almost surely, 2^61305760077 is an apocalyptic number.

It is an amenable number.

61305760077 is a deficient number, since it is larger than the sum of its proper divisors (25243548339).

61305760077 is a wasteful number, since it uses less digits than its factorization.

61305760077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202073747.

The product of its (nonzero) digits is 185220, while the sum is 42.

The spelling of 61305760077 in words is "sixty-one billion, three hundred five million, seven hundred sixty thousand, seventy-seven".