61971831073 has 8 divisors (see below), whose sum is σ = 62090519328. Its totient is φ = 61853203104.

The previous prime is 61971831049. The next prime is 61971831107. The reversal of 61971831073 is 37013817916.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61971831073 - 2⁵ = 61971831041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61971831473) 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 7 ways as a sum of consecutive naturals, for example, 2407690 + ... + 2433292.

It is an arithmetic number, because the mean of its divisors is an integer number (7761314916).

Almost surely, 2^61971831073 is an apocalyptic number.

It is an amenable number.

61971831073 is a deficient number, since it is larger than the sum of its proper divisors (118688255).

61971831073 is a wasteful number, since it uses less digits than its factorization.

61971831073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30143.

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 61971831073 in words is "sixty-one billion, nine hundred seventy-one million, eight hundred thirty-one thousand, seventy-three".