61174968445 has 4 divisors (see below), whose sum is σ = 73409962140. Its totient is φ = 48939974752.

The previous prime is 61174968347. The next prime is 61174968473. The reversal of 61174968445 is 54486947116.

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 46342895076 + 14832073369 = 215274^2 + 121787^2 .

It is a cyclic number.

It is not a de Polignac number, because 61174968445 - 2⁷ = 61174968317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6117496840 + ... + 6117496849.

It is an arithmetic number, because the mean of its divisors is an integer number (18352490535).

Almost surely, 2^61174968445 is an apocalyptic number.

It is an amenable number.

61174968445 is a deficient number, since it is larger than the sum of its proper divisors (12234993695).

61174968445 is a wasteful number, since it uses less digits than its factorization.

61174968445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12234993694.

The product of its digits is 5806080, while the sum is 55.

The spelling of 61174968445 in words is "sixty-one billion, one hundred seventy-four million, nine hundred sixty-eight thousand, four hundred forty-five".