163126728904574 has 4 divisors (see below), whose sum is σ = 244690093356864. Its totient is φ = 81563364452286.

The previous prime is 163126728904541. The next prime is 163126728904583. The reversal of 163126728904574 is 475409827621361.

It is a happy number.

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

It is a super-2 number, since 2×163126728904574² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 163126728904574.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40781682226142 + ... + 40781682226145.

It is an arithmetic number, because the mean of its divisors is an integer number (61172523339216).

It is a 2-persistent number, because it is pandigital, and so is 2⋅163126728904574 = 326253457809148, but 3⋅163126728904574 = 489380186713722 is not.

Almost surely, 2^{163126728904574} is an apocalyptic number.

163126728904574 is a deficient number, since it is larger than the sum of its proper divisors (81563364452290).

163126728904574 is an equidigital number, since it uses as much as digits as its factorization.

163126728904574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81563364452289.

The product of its (nonzero) digits is 121927680, while the sum is 65.

The spelling of 163126728904574 in words is "one hundred sixty-three trillion, one hundred twenty-six billion, seven hundred twenty-eight million, nine hundred four thousand, five hundred seventy-four".