61731698200 has 48 divisors (see below), whose sum is σ = 145255468680. Its totient is φ = 24395170560.

The previous prime is 61731698183. The next prime is 61731698201. The reversal of 61731698200 is 289613716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61731698201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1842789 + ... + 1875988.

Almost surely, 2^61731698200 is an apocalyptic number.

It is an amenable number.

61731698200 is an abundant number, since it is smaller than the sum of its proper divisors (83523770480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61731698200 is a wasteful number, since it uses less digits than its factorization.

61731698200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3718876 (or 3718867 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 61731698200 in words is "sixty-one billion, seven hundred thirty-one million, six hundred ninety-eight thousand, two hundred".