133564309850 has 24 divisors (see below), whose sum is σ = 252502238748. Its totient is φ = 52549891200.

The previous prime is 133564309849. The next prime is 133564309909. The reversal of 133564309850 is 58903465331.

It can be written as a sum of positive squares in 6 ways, for example, as 23740338241 + 109823971609 = 154079^2 + 331397^2 .

It is a junction number, because it is equal to n+sod(n) for n = 133564309795 and 133564309804.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21892739 + ... + 21898838.

Almost surely, 2^133564309850 is an apocalyptic number.

133564309850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133564309850 is a deficient number, since it is larger than the sum of its proper divisors (118937928898).

133564309850 is a wasteful number, since it uses less digits than its factorization.

133564309850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43791650 (or 43791645 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 133564309850 in words is "one hundred thirty-three billion, five hundred sixty-four million, three hundred nine thousand, eight hundred fifty".