4006143225521 has 2 divisors, whose sum is σ = 4006143225522. Its totient is φ = 4006143225520.

The previous prime is 4006143225509. The next prime is 4006143225529. The reversal of 4006143225521 is 1255223416004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3948014015521 + 58129210000 = 1986961^2 + 241100^2 .

It is a cyclic number.

It is not a de Polignac number, because 4006143225521 - 2¹⁴ = 4006143209137 is a prime.

It is not a weakly prime, because it can be changed into another prime (4006143225529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2003071612760 + 2003071612761.

It is an arithmetic number, because the mean of its divisors is an integer number (2003071612761).

Almost surely, 2^{4006143225521} is an apocalyptic number.

It is an amenable number.

4006143225521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4006143225521 is an equidigital number, since it uses as much as digits as its factorization.

4006143225521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 4006143225521 in words is "four trillion, six billion, one hundred forty-three million, two hundred twenty-five thousand, five hundred twenty-one".