2145045525331 has 4 divisors (see below), whose sum is σ = 2145058986664. Its totient is φ = 2145032064000.

The previous prime is 2145045525317. The next prime is 2145045525353. The reversal of 2145045525331 is 1335255405412.

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 2145045525331 - 2⁹ = 2145045524819 is a prime.

It is a super-2 number, since 2×2145045525331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145045525361) 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, 6488745 + ... + 6811306.

It is an arithmetic number, because the mean of its divisors is an integer number (536264746666).

Almost surely, 2^{2145045525331} is an apocalyptic number.

2145045525331 is a deficient number, since it is larger than the sum of its proper divisors (13461333).

2145045525331 is a wasteful number, since it uses less digits than its factorization.

2145045525331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13461332.

The product of its (nonzero) digits is 360000, while the sum is 40.

The spelling of 2145045525331 in words is "two trillion, one hundred forty-five billion, forty-five million, five hundred twenty-five thousand, three hundred thirty-one".