145165044531 has 8 divisors (see below), whose sum is σ = 208442115280. Its totient is φ = 89332335072.

The previous prime is 145165044527. The next prime is 145165044533. The reversal of 145165044531 is 135440561541.

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

It is not a de Polignac number, because 145165044531 - 2² = 145165044527 is a prime.

It is a super-3 number, since 3×145165044531³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 3722180629 = 145165044531 / (1 + 4 + 5 + 1 + 6 + 5 + 0 + 4 + 4 + 5 + 3 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145165044531.

It is not an unprimeable number, because it can be changed into a prime (145165044533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1861090276 + ... + 1861090353.

It is an arithmetic number, because the mean of its divisors is an integer number (26055264410).

Almost surely, 2^145165044531 is an apocalyptic number.

145165044531 is a deficient number, since it is larger than the sum of its proper divisors (63277070749).

145165044531 is a wasteful number, since it uses less digits than its factorization.

145165044531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3722180645.

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 145165044531 in words is "one hundred forty-five billion, one hundred sixty-five million, forty-four thousand, five hundred thirty-one".