191380705268 has 24 divisors (see below), whose sum is σ = 346098133920. Its totient is φ = 92539591200.

The previous prime is 191380705213. The next prime is 191380705277. The reversal of 191380705268 is 862507083191.

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 7 ways as a sum of consecutive naturals, for example, 5490938 + ... + 5525681.

It is an arithmetic number, because the mean of its divisors is an integer number (14420755580).

Almost surely, 2^191380705268 is an apocalyptic number.

It is an amenable number.

191380705268 is a deficient number, since it is larger than the sum of its proper divisors (154717428652).

191380705268 is a wasteful number, since it uses less digits than its factorization.

191380705268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11016767 (or 11016765 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 191380705268 in words is "one hundred ninety-one billion, three hundred eighty million, seven hundred five thousand, two hundred sixty-eight".