2013243103957 has 2 divisors, whose sum is σ = 2013243103958. Its totient is φ = 2013243103956.

The previous prime is 2013243103943. The next prime is 2013243104017. The reversal of 2013243103957 is 7593013423102.

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., 1441887017796 + 571356086161 = 1200786^2 + 755881^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2013243103957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2013243107957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006621551978 + 1006621551979.

It is an arithmetic number, because the mean of its divisors is an integer number (1006621551979).

Almost surely, 2^{2013243103957} is an apocalyptic number.

It is an amenable number.

2013243103957 is a deficient number, since it is larger than the sum of its proper divisors (1).

2013243103957 is an equidigital number, since it uses as much as digits as its factorization.

2013243103957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 40.

The spelling of 2013243103957 in words is "two trillion, thirteen billion, two hundred forty-three million, one hundred three thousand, nine hundred fifty-seven".