78928909503 has 8 divisors (see below), whose sum is σ = 105245435568. Its totient is φ = 52615828224.

The previous prime is 78928909447. The next prime is 78928909589. The reversal of 78928909503 is 30590982987.

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

It is not a de Polignac number, because 78928909503 - 2⁶ = 78928909439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78928909303) 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, 807250 + ... + 899727.

It is an arithmetic number, because the mean of its divisors is an integer number (13155679446).

Almost surely, 2^78928909503 is an apocalyptic number.

78928909503 is a deficient number, since it is larger than the sum of its proper divisors (26316526065).

78928909503 is a wasteful number, since it uses less digits than its factorization.

78928909503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722393.

The product of its (nonzero) digits is 9797760, while the sum is 60.

The spelling of 78928909503 in words is "seventy-eight billion, nine hundred twenty-eight million, nine hundred nine thousand, five hundred three".