78743440103 has 2 divisors, whose sum is σ = 78743440104. Its totient is φ = 78743440102.

The previous prime is 78743440063. The next prime is 78743440129. The reversal of 78743440103 is 30104434787.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78743440103 - 2¹² = 78743436007 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78743440183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39371720051 + 39371720052.

It is an arithmetic number, because the mean of its divisors is an integer number (39371720052).

Almost surely, 2^78743440103 is an apocalyptic number.

78743440103 is a deficient number, since it is larger than the sum of its proper divisors (1).

78743440103 is an equidigital number, since it uses as much as digits as its factorization.

78743440103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 41.

The spelling of 78743440103 in words is "seventy-eight billion, seven hundred forty-three million, four hundred forty thousand, one hundred three".