145170172245 has 32 divisors (see below), whose sum is σ = 266712145920. Its totient is φ = 66048978240.

The previous prime is 145170172241. The next prime is 145170172379. The reversal of 145170172245 is 542271071541.

It is not a de Polignac number, because 145170172245 - 2² = 145170172241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145170172241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3254085 + ... + 3298394.

It is an arithmetic number, because the mean of its divisors is an integer number (8334754560).

Almost surely, 2^145170172245 is an apocalyptic number.

145170172245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145170172245 is a deficient number, since it is larger than the sum of its proper divisors (121541973675).

145170172245 is a wasteful number, since it uses less digits than its factorization.

145170172245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6552705.

The product of its (nonzero) digits is 78400, while the sum is 39.

The spelling of 145170172245 in words is "one hundred forty-five billion, one hundred seventy million, one hundred seventy-two thousand, two hundred forty-five".