2145312511043 has 16 divisors (see below), whose sum is σ = 2316992303136. Its totient is φ = 1974588295680.

The previous prime is 2145312511019. The next prime is 2145312511049. The reversal of 2145312511043 is 3401152135412.

It is not a de Polignac number, because 2145312511043 - 2¹⁸ = 2145312248899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145312511049) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 10864571 + ... + 11060267.

It is an arithmetic number, because the mean of its divisors is an integer number (144812018946).

Almost surely, 2^{2145312511043} is an apocalyptic number.

2145312511043 is a deficient number, since it is larger than the sum of its proper divisors (171679792093).

2145312511043 is a wasteful number, since it uses less digits than its factorization.

2145312511043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198134.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 2145312511043 its reverse (3401152135412), we get a palindrome (5546464646455).

The spelling of 2145312511043 in words is "two trillion, one hundred forty-five billion, three hundred twelve million, five hundred eleven thousand, forty-three".