163126728904572 has 36 divisors (see below), whose sum is σ = 412364771634816. Its totient is φ = 54373380519360.

The previous prime is 163126728904541. The next prime is 163126728904583. The reversal of 163126728904572 is 275409827621361.

It is a happy number.

163126728904572 is a `hidden beast` number, since 1 + 6 + 3 + 1 + 26 + 72 + 8 + 90 + 457 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×163126728904572² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 90586929 + ... + 92370152.

It is an arithmetic number, because the mean of its divisors is an integer number (11454576989856).

It is a 2-persistent number, because it is pandigital, and so is 2⋅163126728904572 = 326253457809144, but 3⋅163126728904572 = 489380186713716 is not.

Almost surely, 2^{163126728904572} is an apocalyptic number.

163126728904572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

163126728904572 is an abundant number, since it is smaller than the sum of its proper divisors (249238042730244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163126728904572 is a wasteful number, since it uses less digits than its factorization.

163126728904572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182981858 (or 182981853 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 63.

The spelling of 163126728904572 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-two".