61064467845 has 16 divisors (see below), whose sum is σ = 101072223360. Its totient is φ = 31444691264.

The previous prime is 61064467819. The next prime is 61064467847. The reversal of 61064467845 is 54876446016.

It is a cyclic number.

It is not a de Polignac number, because 61064467845 - 2¹⁰ = 61064466821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61064467847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70188609 + ... + 70189478.

It is an arithmetic number, because the mean of its divisors is an integer number (6317013960).

Almost surely, 2^61064467845 is an apocalyptic number.

It is an amenable number.

61064467845 is a deficient number, since it is larger than the sum of its proper divisors (40007755515).

61064467845 is a wasteful number, since it uses less digits than its factorization.

61064467845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140378124.

The product of its (nonzero) digits is 3870720, while the sum is 51.

The spelling of 61064467845 in words is "sixty-one billion, sixty-four million, four hundred sixty-seven thousand, eight hundred forty-five".