191535010436 has 72 divisors (see below), whose sum is σ = 434407349376. Its totient is φ = 73036246080.

The previous prime is 191535010417. The next prime is 191535010453. The reversal of 191535010436 is 634010535191.

It is a self number, because there is not a number n which added to its sum of digits gives 191535010436.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 843755 + ... + 1046418.

It is an arithmetic number, because the mean of its divisors is an integer number (6033435408).

Almost surely, 2^191535010436 is an apocalyptic number.

It is an amenable number.

191535010436 is an abundant number, since it is smaller than the sum of its proper divisors (242872338940).

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

191535010436 is a wasteful number, since it uses less digits than its factorization.

191535010436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890249 (or 1890240 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 38.

The spelling of 191535010436 in words is "one hundred ninety-one billion, five hundred thirty-five million, ten thousand, four hundred thirty-six".