2145125053231 has 4 divisors (see below), whose sum is σ = 2150970080992. Its totient is φ = 2139280025472.

The previous prime is 2145125053223. The next prime is 2145125053261. The reversal of 2145125053231 is 1323505215412.

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 2145125053231 - 2³ = 2145125053223 is a prime.

It is a super-4 number, since 4×2145125053231⁴ (a number of 50 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145125053261) 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, 2922513330 + ... + 2922514063.

It is an arithmetic number, because the mean of its divisors is an integer number (537742520248).

Almost surely, 2^{2145125053231} is an apocalyptic number.

2145125053231 is a deficient number, since it is larger than the sum of its proper divisors (5845027761).

2145125053231 is an equidigital number, since it uses as much as digits as its factorization.

2145125053231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5845027760.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 2145125053231 in words is "two trillion, one hundred forty-five billion, one hundred twenty-five million, fifty-three thousand, two hundred thirty-one".