2043402130521 has 12 divisors (see below), whose sum is σ = 2952259592100. Its totient is φ = 1361954823840.

The previous prime is 2043402130489. The next prime is 2043402130537. The reversal of 2043402130521 is 1250312043402.

2043402130521 is a `hidden beast` number, since 2 + 0 + 4 + 3 + 4 + 0 + 2 + 130 + 521 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 880239880521 + 1163162250000 = 938211^2 + 1078500^2 .

It is not a de Polignac number, because 2043402130521 - 2⁵ = 2043402130489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2043402130921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26063950 + ... + 26142231.

It is an arithmetic number, because the mean of its divisors is an integer number (246021632675).

Almost surely, 2^{2043402130521} is an apocalyptic number.

It is an amenable number.

2043402130521 is a deficient number, since it is larger than the sum of its proper divisors (908857461579).

2043402130521 is a wasteful number, since it uses less digits than its factorization.

2043402130521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52210536 (or 52210533 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 2043402130521 its reverse (1250312043402), we get a palindrome (3293714173923).

The spelling of 2043402130521 in words is "two trillion, forty-three billion, four hundred two million, one hundred thirty thousand, five hundred twenty-one".