78328678503 has 8 divisors (see below), whose sum is σ = 104439883248. Its totient is φ = 52218296384.

The previous prime is 78328678487. The next prime is 78328678567. The reversal of 78328678503 is 30587682387.

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 78328678503 - 2⁴ = 78328678487 is a prime.

It is a super-2 number, since 2×78328678503² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78328678573) 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, 68875 + ... + 401747.

It is an arithmetic number, because the mean of its divisors is an integer number (13054985406).

Almost surely, 2^78328678503 is an apocalyptic number.

78328678503 is a deficient number, since it is larger than the sum of its proper divisors (26111204745).

78328678503 is a wasteful number, since it uses less digits than its factorization.

78328678503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411313.

The product of its (nonzero) digits is 13547520, while the sum is 57.

The spelling of 78328678503 in words is "seventy-eight billion, three hundred twenty-eight million, six hundred seventy-eight thousand, five hundred three".