145231311155215 has 8 divisors (see below), whose sum is σ = 174277690495920. Its totient is φ = 116184970851072.

The previous prime is 145231311155213. The next prime is 145231311155239. The reversal of 145231311155215 is 512551113132541.

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 145231311155215 - 2¹ = 145231311155213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145231311155213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 831885 + ... + 17063254.

It is an arithmetic number, because the mean of its divisors is an integer number (21784711311990).

Almost surely, 2^{145231311155215} is an apocalyptic number.

145231311155215 is a deficient number, since it is larger than the sum of its proper divisors (29046379340705).

145231311155215 is a wasteful number, since it uses less digits than its factorization.

145231311155215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19518281.

The product of its digits is 90000, while the sum is 40.

Adding to 145231311155215 its reverse (512551113132541), we get a palindrome (657782424287756).

The spelling of 145231311155215 in words is "one hundred forty-five trillion, two hundred thirty-one billion, three hundred eleven million, one hundred fifty-five thousand, two hundred fifteen".