191012481608 has 32 divisors (see below), whose sum is σ = 385720392960. Its totient is φ = 88154552640.

The previous prime is 191012481581. The next prime is 191012481619. The reversal of 191012481608 is 806184210191.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2253353 + ... + 2336583.

It is an arithmetic number, because the mean of its divisors is an integer number (12053762280).

Almost surely, 2^191012481608 is an apocalyptic number.

It is an amenable number.

191012481608 is an abundant number, since it is smaller than the sum of its proper divisors (194707911352).

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

191012481608 is a wasteful number, since it uses less digits than its factorization.

191012481608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105317 (or 105313 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 41.

Adding to 191012481608 its reverse (806184210191), we get a palindrome (997196691799).

The spelling of 191012481608 in words is "one hundred ninety-one billion, twelve million, four hundred eighty-one thousand, six hundred eight".