203460642613 has 2 divisors, whose sum is σ = 203460642614. Its totient is φ = 203460642612.

The previous prime is 203460642611. The next prime is 203460642673. The reversal of 203460642613 is 316246064302.

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., 139321534564 + 64139108049 = 373258^2 + 253257^2 .

It is a cyclic number.

It is not a de Polignac number, because 203460642613 - 2¹ = 203460642611 is a prime.

It is a super-2 number, since 2×203460642613² (a number of 23 digits) contains 22 as substring.

Together with 203460642611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203460642611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101730321306 + 101730321307.

It is an arithmetic number, because the mean of its divisors is an integer number (101730321307).

Almost surely, 2^203460642613 is an apocalyptic number.

It is an amenable number.

203460642613 is a deficient number, since it is larger than the sum of its proper divisors (1).

203460642613 is an equidigital number, since it uses as much as digits as its factorization.

203460642613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 203460642613 in words is "two hundred three billion, four hundred sixty million, six hundred forty-two thousand, six hundred thirteen".