186993202399980 has 48 divisors (see below), whose sum is σ = 525867346525920. Its totient is φ = 49647103515648.

The previous prime is 186993202399937. The next prime is 186993202399981. The reversal of 186993202399980 is 89993202399681.

It is a junction number, because it is equal to n+sod(n) for n = 186993202399896 and 186993202399905.

It is not an unprimeable number, because it can be changed into a prime (186993202399981) 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, 6804687949 + ... + 6804715428.

It is an arithmetic number, because the mean of its divisors is an integer number (10955569719290).

Almost surely, 2^{186993202399980} is an apocalyptic number.

186993202399980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

186993202399980 is an abundant number, since it is smaller than the sum of its proper divisors (338874144125940).

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

186993202399980 is a wasteful number, since it uses less digits than its factorization.

186993202399980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13609403618 (or 13609403616 counting only the distinct ones).

The product of its (nonzero) digits is 816293376, while the sum is 78.

The spelling of 186993202399980 in words is "one hundred eighty-six trillion, nine hundred ninety-three billion, two hundred two million, three hundred ninety-nine thousand, nine hundred eighty".