162525421066 has 4 divisors (see below), whose sum is σ = 243788131602. Its totient is φ = 81262710532.

The previous prime is 162525421061. The next prime is 162525421067. The reversal of 162525421066 is 660124525261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 660124525261 = 1151 ⋅573522611.

It can be written as a sum of positive squares in only one way, i.e., 138436829041 + 24088592025 = 372071^2 + 155205^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (162525421061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40631355265 + ... + 40631355268.

Almost surely, 2^162525421066 is an apocalyptic number.

162525421066 is a deficient number, since it is larger than the sum of its proper divisors (81262710536).

162525421066 is an equidigital number, since it uses as much as digits as its factorization.

162525421066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81262710535.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 162525421066 in words is "one hundred sixty-two billion, five hundred twenty-five million, four hundred twenty-one thousand, sixty-six".