61983638903 has 2 divisors, whose sum is σ = 61983638904. Its totient is φ = 61983638902.

The previous prime is 61983638887. The next prime is 61983638921. The reversal of 61983638903 is 30983638916.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61983638903 - 2⁴ = 61983638887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61983638303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30991819451 + 30991819452.

It is an arithmetic number, because the mean of its divisors is an integer number (30991819452).

Almost surely, 2^61983638903 is an apocalyptic number.

61983638903 is a deficient number, since it is larger than the sum of its proper divisors (1).

61983638903 is an equidigital number, since it uses as much as digits as its factorization.

61983638903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5038848, while the sum is 56.

The spelling of 61983638903 in words is "sixty-one billion, nine hundred eighty-three million, six hundred thirty-eight thousand, nine hundred three".