2532643631645 has 4 divisors (see below), whose sum is σ = 3039172357980. Its totient is φ = 2026114905312.

The previous prime is 2532643631641. The next prime is 2532643631659. The reversal of 2532643631645 is 5461363462352.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1630468502404 + 902175129241 = 1276898^2 + 949829^2 .

It is a cyclic number.

It is not a de Polignac number, because 2532643631645 - 2² = 2532643631641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2532643631593 and 2532643631602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2532643631641) 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, 253264363160 + ... + 253264363169.

It is an arithmetic number, because the mean of its divisors is an integer number (759793089495).

Almost surely, 2^{2532643631645} is an apocalyptic number.

It is an amenable number.

2532643631645 is a deficient number, since it is larger than the sum of its proper divisors (506528726335).

2532643631645 is an equidigital number, since it uses as much as digits as its factorization.

2532643631645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506528726334.

The product of its digits is 9331200, while the sum is 50.

The spelling of 2532643631645 in words is "two trillion, five hundred thirty-two billion, six hundred forty-three million, six hundred thirty-one thousand, six hundred forty-five".