191340920700 has 108 divisors (see below), whose sum is σ = 600238952040. Its totient is φ = 50982433920.

The previous prime is 191340920699. The next prime is 191340920717. The reversal of 191340920700 is 7029043191.

It is a super-2 number, since 2×191340920700² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 1019607 + ... + 1192593.

Almost surely, 2^191340920700 is an apocalyptic number.

191340920700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191340920700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300119476020).

191340920700 is an abundant number, since it is smaller than the sum of its proper divisors (408898031340).

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

191340920700 is a wasteful number, since it uses less digits than its factorization.

191340920700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174236 (or 174226 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

Adding to 191340920700 its reverse (7029043191), we get a palindrome (198369963891).

The spelling of 191340920700 in words is "one hundred ninety-one billion, three hundred forty million, nine hundred twenty thousand, seven hundred".