4645112402521 has 2 divisors, whose sum is σ = 4645112402522. Its totient is φ = 4645112402520.

The previous prime is 4645112402501. The next prime is 4645112402549. The reversal of 4645112402521 is 1252042115464.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3482090353296 + 1163022049225 = 1866036^2 + 1078435^2 .

It is a cyclic number.

It is not a de Polignac number, because 4645112402521 - 2⁷ = 4645112402393 is a prime.

It is not a weakly prime, because it can be changed into another prime (4645112402501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2322556201260 + 2322556201261.

It is an arithmetic number, because the mean of its divisors is an integer number (2322556201261).

Almost surely, 2^{4645112402521} is an apocalyptic number.

It is an amenable number.

4645112402521 is a deficient number, since it is larger than the sum of its proper divisors (1).

4645112402521 is an equidigital number, since it uses as much as digits as its factorization.

4645112402521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 76800, while the sum is 37.

Adding to 4645112402521 its reverse (1252042115464), we get a palindrome (5897154517985).

The spelling of 4645112402521 in words is "four trillion, six hundred forty-five billion, one hundred twelve million, four hundred two thousand, five hundred twenty-one".