145609170997 has 8 divisors (see below), whose sum is σ = 148362435000. Its totient is φ = 142856126400.

The previous prime is 145609170851. The next prime is 145609171073. The reversal of 145609170997 is 799071906541.

It can be written as a sum of positive squares in 4 ways, for example, as 75485364516 + 70123806481 = 274746^2 + 264809^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145609170997 - 2¹⁵ = 145609138229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145609171997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2018247 + ... + 2089147.

It is an arithmetic number, because the mean of its divisors is an integer number (18545304375).

Almost surely, 2^145609170997 is an apocalyptic number.

It is an amenable number.

145609170997 is a deficient number, since it is larger than the sum of its proper divisors (2753264003).

145609170997 is an equidigital number, since it uses as much as digits as its factorization.

145609170997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109703.

The product of its (nonzero) digits is 4286520, while the sum is 58.

The spelling of 145609170997 in words is "one hundred forty-five billion, six hundred nine million, one hundred seventy thousand, nine hundred ninety-seven".