145531033015 has 4 divisors (see below), whose sum is σ = 174637239624. Its totient is φ = 116424826408.

The previous prime is 145531032947. The next prime is 145531033019. The reversal of 145531033015 is 510330135541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145531033015 - 2¹⁵ = 145531000247 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 (145531033019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14553103297 + ... + 14553103306.

It is an arithmetic number, because the mean of its divisors is an integer number (43659309906).

Almost surely, 2^145531033015 is an apocalyptic number.

145531033015 is a deficient number, since it is larger than the sum of its proper divisors (29106206609).

145531033015 is an equidigital number, since it uses as much as digits as its factorization.

145531033015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29106206608.

The product of its (nonzero) digits is 13500, while the sum is 31.

Adding to 145531033015 its reverse (510330135541), we get a palindrome (655861168556).

The spelling of 145531033015 in words is "one hundred forty-five billion, five hundred thirty-one million, thirty-three thousand, fifteen".