61014653785 has 4 divisors (see below), whose sum is σ = 73217584548. Its totient is φ = 48811723024.

The previous prime is 61014653779. The next prime is 61014653797. The reversal of 61014653785 is 58735641016.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32621055769 + 28393598016 = 180613^2 + 168504^2 .

It is a cyclic number.

It is not a de Polignac number, because 61014653785 - 2³¹ = 58867170137 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6101465374 + ... + 6101465383.

It is an arithmetic number, because the mean of its divisors is an integer number (18304396137).

Almost surely, 2^61014653785 is an apocalyptic number.

It is an amenable number.

61014653785 is a deficient number, since it is larger than the sum of its proper divisors (12202930763).

61014653785 is a wasteful number, since it uses less digits than its factorization.

61014653785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12202930762.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 61014653785 in words is "sixty-one billion, fourteen million, six hundred fifty-three thousand, seven hundred eighty-five".