61035585785 has 4 divisors (see below), whose sum is σ = 73242702948. Its totient is φ = 48828468624.

The previous prime is 61035585773. The next prime is 61035585797. The reversal of 61035585785 is 58758553016.

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

It is an interprime number because it is at equal distance from previous prime (61035585773) and next prime (61035585797).

It can be written as a sum of positive squares in 2 ways, for example, as 11427823801 + 49607761984 = 106901^2 + 222728^2 .

It is a cyclic number.

It is not a de Polignac number, because 61035585785 - 2⁸ = 61035585529 is a prime.

It is a Duffinian 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, 6103558574 + ... + 6103558583.

It is an arithmetic number, because the mean of its divisors is an integer number (18310675737).

Almost surely, 2^61035585785 is an apocalyptic number.

It is an amenable number.

61035585785 is a deficient number, since it is larger than the sum of its proper divisors (12207117163).

61035585785 is a wasteful number, since it uses less digits than its factorization.

61035585785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12207117162.

The product of its (nonzero) digits is 5040000, while the sum is 53.

The spelling of 61035585785 in words is "sixty-one billion, thirty-five million, five hundred eighty-five thousand, seven hundred eighty-five".