61085328563 has 4 divisors (see below), whose sum is σ = 69811804080. Its totient is φ = 52358853048.

The previous prime is 61085328559. The next prime is 61085328649. The reversal of 61085328563 is 36582358016.

61085328563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61085328563 - 2² = 61085328559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61085328463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4363237748 + ... + 4363237761.

It is an arithmetic number, because the mean of its divisors is an integer number (17452951020).

Almost surely, 2^61085328563 is an apocalyptic number.

61085328563 is a deficient number, since it is larger than the sum of its proper divisors (8726475517).

61085328563 is an equidigital number, since it uses as much as digits as its factorization.

61085328563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8726475516.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 61085328563 in words is "sixty-one billion, eighty-five million, three hundred twenty-eight thousand, five hundred sixty-three".