78865745803 has 8 divisors (see below), whose sum is σ = 85135050000. Its totient is φ = 72625399968.

The previous prime is 78865745731. The next prime is 78865745809. The reversal of 78865745803 is 30854756887.

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 78865745803 - 2²¹ = 78863648651 is a prime.

It is a super-2 number, since 2×78865745803² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78865745809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7233928 + ... + 7244821.

It is an arithmetic number, because the mean of its divisors is an integer number (10641881250).

Almost surely, 2^78865745803 is an apocalyptic number.

78865745803 is a deficient number, since it is larger than the sum of its proper divisors (6269304197).

78865745803 is a wasteful number, since it uses less digits than its factorization.

78865745803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14479181.

The product of its (nonzero) digits is 45158400, while the sum is 61.

The spelling of 78865745803 in words is "seventy-eight billion, eight hundred sixty-five million, seven hundred forty-five thousand, eight hundred three".