1603355107061 has 2 divisors, whose sum is σ = 1603355107062. Its totient is φ = 1603355107060.

The previous prime is 1603355107033. The next prime is 1603355107063. The reversal of 1603355107061 is 1607015533061.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1295257952836 + 308097154225 = 1138094^2 + 555065^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1603355107061 is a prime.

Together with 1603355107063, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1603355107063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801677553530 + 801677553531.

It is an arithmetic number, because the mean of its divisors is an integer number (801677553531).

Almost surely, 2^{1603355107061} is an apocalyptic number.

It is an amenable number.

1603355107061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1603355107061 is an equidigital number, since it uses as much as digits as its factorization.

1603355107061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56700, while the sum is 38.

The spelling of 1603355107061 in words is "one trillion, six hundred three billion, three hundred fifty-five million, one hundred seven thousand, sixty-one".