78909942803 has 8 divisors (see below), whose sum is σ = 79416627072. Its totient is φ = 78404806656.

The previous prime is 78909942779. The next prime is 78909942827. The reversal of 78909942803 is 30824990987.

It is an interprime number because it is at equal distance from previous prime (78909942779) and next prime (78909942827).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78909942803 - 2⁸ = 78909942547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78909942203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 284675 + ... + 488732.

It is an arithmetic number, because the mean of its divisors is an integer number (9927078384).

Almost surely, 2^78909942803 is an apocalyptic number.

78909942803 is a deficient number, since it is larger than the sum of its proper divisors (506684269).

78909942803 is a wasteful number, since it uses less digits than its factorization.

78909942803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774061.

The product of its (nonzero) digits is 7838208, while the sum is 59.

The spelling of 78909942803 in words is "seventy-eight billion, nine hundred nine million, nine hundred forty-two thousand, eight hundred three".