2145312135412 has 48 divisors (see below), whose sum is σ = 3811701749184. Its totient is φ = 1056373920000.

The previous prime is 2145312135391. The next prime is 2145312135413.

2145312135412 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145312135413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164599648 + ... + 164612680.

It is an arithmetic number, because the mean of its divisors is an integer number (79410453108).

Almost surely, 2^{2145312135412} is an apocalyptic number.

It is an amenable number.

2145312135412 is a deficient number, since it is larger than the sum of its proper divisors (1666389613772).

2145312135412 is a wasteful number, since it uses less digits than its factorization.

2145312135412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15280 (or 15278 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

The spelling of 2145312135412 in words is "two trillion, one hundred forty-five billion, three hundred twelve million, one hundred thirty-five thousand, four hundred twelve".