61969944847 has 4 divisors (see below), whose sum is σ = 61975931680. Its totient is φ = 61963958016.

The previous prime is 61969944833. The next prime is 61969944923. The reversal of 61969944847 is 74844996916.

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 61969944847 - 2⁷ = 61969944719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61969945847) by changing a digit.

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, 2977863 + ... + 2998600.

It is an arithmetic number, because the mean of its divisors is an integer number (15493982920).

Almost surely, 2^61969944847 is an apocalyptic number.

61969944847 is a deficient number, since it is larger than the sum of its proper divisors (5986833).

61969944847 is a wasteful number, since it uses less digits than its factorization.

61969944847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5986832.

The product of its digits is 94058496, while the sum is 67.

The spelling of 61969944847 in words is "sixty-one billion, nine hundred sixty-nine million, nine hundred forty-four thousand, eight hundred forty-seven".