2145555245530 has 16 divisors (see below), whose sum is σ = 4089175880040. Its totient is φ = 807738445312.

The previous prime is 2145555245521. The next prime is 2145555245569. The reversal of 2145555245530 is 355425555412.

It can be written as a sum of positive squares in 4 ways, for example, as 1433764365201 + 711790880329 = 1197399^2 + 843677^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6310456435 + ... + 6310456774.

Almost surely, 2^{2145555245530} is an apocalyptic number.

2145555245530 is a deficient number, since it is larger than the sum of its proper divisors (1943620634510).

2145555245530 is a wasteful number, since it uses less digits than its factorization.

2145555245530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12620913233.

The product of its (nonzero) digits is 3000000, while the sum is 46.

The spelling of 2145555245530 in words is "two trillion, one hundred forty-five billion, five hundred fifty-five million, two hundred forty-five thousand, five hundred thirty".