102191688482 has 8 divisors (see below), whose sum is σ = 165078881436. Its totient is φ = 47165394672.

The previous prime is 102191688457. The next prime is 102191688497. The reversal of 102191688482 is 284886191201.

It can be written as a sum of positive squares in 2 ways, for example, as 80992037281 + 21199651201 = 284591^2 + 145601^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 102191688482.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1965224753 + ... + 1965224804.

Almost surely, 2^102191688482 is an apocalyptic number.

102191688482 is a deficient number, since it is larger than the sum of its proper divisors (62887192954).

102191688482 is a wasteful number, since it uses less digits than its factorization.

102191688482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3930449572.

The product of its (nonzero) digits is 442368, while the sum is 50.

The spelling of 102191688482 in words is "one hundred two billion, one hundred ninety-one million, six hundred eighty-eight thousand, four hundred eighty-two".