61832216621 has 16 divisors (see below), whose sum is σ = 74828862720. Its totient is φ = 49876995840.

The previous prime is 61832216617. The next prime is 61832216639. The reversal of 61832216621 is 12661223816.

61832216621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61832216621 - 2² = 61832216617 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 (61832216651) 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, 2228051 + ... + 2255631.

It is an arithmetic number, because the mean of its divisors is an integer number (4676803920).

Almost surely, 2^61832216621 is an apocalyptic number.

It is an amenable number.

61832216621 is a deficient number, since it is larger than the sum of its proper divisors (12996646099).

61832216621 is a wasteful number, since it uses less digits than its factorization.

61832216621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46444.

The product of its digits is 41472, while the sum is 38.

The spelling of 61832216621 in words is "sixty-one billion, eight hundred thirty-two million, two hundred sixteen thousand, six hundred twenty-one".