170981423001 has 27 divisors (see below), whose sum is σ = 248315323581. Its totient is φ = 113371501824.

The previous prime is 170981422993. The next prime is 170981423057. The reversal of 170981423001 is 100324189071.

It is a happy number.

The square root of 170981423001 is 413499.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 10321544025 + 160659878976 = 101595^2 + 400824^2 .

It is not a de Polignac number, because 170981423001 - 2³ = 170981422993 is a prime.

It is a super-2 number, since 2×170981423001² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (170981423801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 418047285 + ... + 418047693.

Almost surely, 2^170981423001 is an apocalyptic number.

170981423001 is the 413499-th square number.

170981423001 is the 206750-th centered octagonal number.

It is an amenable number.

170981423001 is a deficient number, since it is larger than the sum of its proper divisors (77333900580).

170981423001 is an frugal number, since it uses more digits than its factorization.

170981423001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498 (or 749 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

Multiplying 170981423001 by its sum of digits (36), we get a square (6155331228036 = 2480994²).

The spelling of 170981423001 in words is "one hundred seventy billion, nine hundred eighty-one million, four hundred twenty-three thousand, one".