203696554395013 has 2 divisors, whose sum is σ = 203696554395014. Its totient is φ = 203696554395012.

The previous prime is 203696554394999. The next prime is 203696554395049. The reversal of 203696554395013 is 310593455696302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174251800999809 + 29444753395204 = 13200447^2 + 5426302^2 .

It is a cyclic number.

It is not a de Polignac number, because 203696554395013 - 2⁵ = 203696554394981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203696554395713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101848277197506 + 101848277197507.

It is an arithmetic number, because the mean of its divisors is an integer number (101848277197507).

Almost surely, 2^{203696554395013} is an apocalyptic number.

It is an amenable number.

203696554395013 is a deficient number, since it is larger than the sum of its proper divisors (1).

203696554395013 is an equidigital number, since it uses as much as digits as its factorization.

203696554395013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732000, while the sum is 61.

The spelling of 203696554395013 in words is "two hundred three trillion, six hundred ninety-six billion, five hundred fifty-four million, three hundred ninety-five thousand, thirteen".