201247578856139 has 2 divisors, whose sum is σ = 201247578856140. Its totient is φ = 201247578856138.

The previous prime is 201247578856123. The next prime is 201247578856273. The reversal of 201247578856139 is 931658875742102.

201247578856139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201247578856139 - 2⁴ = 201247578856123 is a prime.

It is not a weakly prime, because it can be changed into another prime (201247578856109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100623789428069 + 100623789428070.

It is an arithmetic number, because the mean of its divisors is an integer number (100623789428070).

It is a 1-persistent number, because it is pandigital, but 2⋅201247578856139 = 402495157712278 is not.

Almost surely, 2^{201247578856139} is an apocalyptic number.

201247578856139 is a deficient number, since it is larger than the sum of its proper divisors (1).

201247578856139 is an equidigital number, since it uses as much as digits as its factorization.

201247578856139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 203212800, while the sum is 68.

The spelling of 201247578856139 in words is "two hundred one trillion, two hundred forty-seven billion, five hundred seventy-eight million, eight hundred fifty-six thousand, one hundred thirty-nine".