203125642205539 has 2 divisors, whose sum is σ = 203125642205540. Its totient is φ = 203125642205538.

The previous prime is 203125642205477. The next prime is 203125642205543. The reversal of 203125642205539 is 935502246521302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203125642205539 - 2¹³ = 203125642197347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203125642205492 and 203125642205501.

It is not a weakly prime, because it can be changed into another prime (203125642905539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101562821102769 + 101562821102770.

It is an arithmetic number, because the mean of its divisors is an integer number (101562821102770).

Almost surely, 2^{203125642205539} is an apocalyptic number.

203125642205539 is a deficient number, since it is larger than the sum of its proper divisors (1).

203125642205539 is an equidigital number, since it uses as much as digits as its factorization.

203125642205539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888000, while the sum is 49.

The spelling of 203125642205539 in words is "two hundred three trillion, one hundred twenty-five billion, six hundred forty-two million, two hundred five thousand, five hundred thirty-nine".