20175532466 has 4 divisors (see below), whose sum is σ = 30263298702. Its totient is φ = 10087766232.

The previous prime is 20175532463. The next prime is 20175532483. The reversal of 20175532466 is 66423557102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16045542241 + 4129990225 = 126671^2 + 64265^2 .

It is a super-2 number, since 2×20175532466² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20175532463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5043883115 + ... + 5043883118.

Almost surely, 2^20175532466 is an apocalyptic number.

20175532466 is a deficient number, since it is larger than the sum of its proper divisors (10087766236).

20175532466 is a wasteful number, since it uses less digits than its factorization.

20175532466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10087766235.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 20175532466 in words is "twenty billion, one hundred seventy-five million, five hundred thirty-two thousand, four hundred sixty-six".