61793931885 has 32 divisors (see below), whose sum is σ = 113059633152. Its totient is φ = 28232400960.

The previous prime is 61793931883. The next prime is 61793931889. The reversal of 61793931885 is 58813939716.

61793931885 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 61793931885 - 2¹ = 61793931883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61793931883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15000 + ... + 351870.

It is an arithmetic number, because the mean of its divisors is an integer number (3533113536).

Almost surely, 2^61793931885 is an apocalyptic number.

It is an amenable number.

61793931885 is a deficient number, since it is larger than the sum of its proper divisors (51265701267).

61793931885 is a wasteful number, since it uses less digits than its factorization.

61793931885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338633.

The product of its digits is 9797760, while the sum is 60.

The spelling of 61793931885 in words is "sixty-one billion, seven hundred ninety-three million, nine hundred thirty-one thousand, eight hundred eighty-five".