61983205898 has 16 divisors (see below), whose sum is σ = 93809987136. Its totient is φ = 30713282880.

The previous prime is 61983205877. The next prime is 61983205909. The reversal of 61983205898 is 89850238916.

It is an unprimeable number.

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, 2421515 + ... + 2446977.

It is an arithmetic number, because the mean of its divisors is an integer number (5863124196).

Almost surely, 2^61983205898 is an apocalyptic number.

61983205898 is a deficient number, since it is larger than the sum of its proper divisors (31826781238).

61983205898 is a wasteful number, since it uses less digits than its factorization.

61983205898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36349.

The product of its (nonzero) digits is 7464960, while the sum is 59.

The spelling of 61983205898 in words is "sixty-one billion, nine hundred eighty-three million, two hundred five thousand, eight hundred ninety-eight".