2145544231015 has 8 divisors (see below), whose sum is σ = 2578853167488. Its totient is φ = 1713635324640.

The previous prime is 2145544230997. The next prime is 2145544231073. The reversal of 2145544231015 is 5101324455412.

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

It is not a de Polignac number, because 2145544231015 - 2¹¹ = 2145544228967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350004151 + ... + 350010280.

It is an arithmetic number, because the mean of its divisors is an integer number (322356645936).

Almost surely, 2^{2145544231015} is an apocalyptic number.

2145544231015 is a deficient number, since it is larger than the sum of its proper divisors (433308936473).

2145544231015 is an equidigital number, since it uses as much as digits as its factorization.

2145544231015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700015049.

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 2145544231015 its reverse (5101324455412), we get a palindrome (7246868686427).

The spelling of 2145544231015 in words is "two trillion, one hundred forty-five billion, five hundred forty-four million, two hundred thirty-one thousand, fifteen".