538520748615001 has 2 divisors, whose sum is σ = 538520748615002. Its totient is φ = 538520748615000.

The previous prime is 538520748614993. The next prime is 538520748615043. The reversal of 538520748615001 is 100516847025835.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283817534203225 + 254703214411776 = 16846885^2 + 15959424^2 .

It is a cyclic number.

It is not a de Polignac number, because 538520748615001 - 2³ = 538520748614993 is a prime.

It is a super-2 number, since 2×538520748615001² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (538520748615301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269260374307500 + 269260374307501.

It is an arithmetic number, because the mean of its divisors is an integer number (269260374307501).

Almost surely, 2^{538520748615001} is an apocalyptic number.

It is an amenable number.

538520748615001 is a deficient number, since it is larger than the sum of its proper divisors (1).

538520748615001 is an equidigital number, since it uses as much as digits as its factorization.

538520748615001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064000, while the sum is 55.

The spelling of 538520748615001 in words is "five hundred thirty-eight trillion, five hundred twenty billion, seven hundred forty-eight million, six hundred fifteen thousand, one".