61843891832 has 16 divisors (see below), whose sum is σ = 119091278760. Its totient is φ = 30086217504.

The previous prime is 61843891829. The next prime is 61843891859. The reversal of 61843891832 is 23819834816.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104465738 + ... + 104466329.

Almost surely, 2^61843891832 is an apocalyptic number.

It is an amenable number.

61843891832 is a deficient number, since it is larger than the sum of its proper divisors (57247386928).

61843891832 is a wasteful number, since it uses less digits than its factorization.

61843891832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208932110 (or 208932106 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 53.

The spelling of 61843891832 in words is "sixty-one billion, eight hundred forty-three million, eight hundred ninety-one thousand, eight hundred thirty-two".