535198319666 has 32 divisors (see below), whose sum is σ = 897158021760. Its totient is φ = 237962555136.

The previous prime is 535198319641. The next prime is 535198319701. The reversal of 535198319666 is 666913891535.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 535198319599 and 535198319608.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 869606 + ... + 1351521.

It is an arithmetic number, because the mean of its divisors is an integer number (28036188180).

Almost surely, 2^535198319666 is an apocalyptic number.

535198319666 is a deficient number, since it is larger than the sum of its proper divisors (361959702094).

535198319666 is a wasteful number, since it uses less digits than its factorization.

535198319666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2221538.

The product of its digits is 31492800, while the sum is 62.

The spelling of 535198319666 in words is "five hundred thirty-five billion, one hundred ninety-eight million, three hundred nineteen thousand, six hundred sixty-six".