78231515670803 has 8 divisors (see below), whose sum is σ = 88286349973680. Its totient is φ = 68667161090080.

The previous prime is 78231515670773. The next prime is 78231515670821. The reversal of 78231515670803 is 30807651513287.

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 78231515670803 - 2⁴⁶ = 7862771493139 is a prime.

It is a super-2 number, since 2×78231515670803² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78231515670883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122619930200 + ... + 122619930837.

It is an arithmetic number, because the mean of its divisors is an integer number (11035793746710).

Almost surely, 2^{78231515670803} is an apocalyptic number.

78231515670803 is a deficient number, since it is larger than the sum of its proper divisors (10054834302877).

78231515670803 is a wasteful number, since it uses less digits than its factorization.

78231515670803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245239861077.

The product of its (nonzero) digits is 8467200, while the sum is 56.

The spelling of 78231515670803 in words is "seventy-eight trillion, two hundred thirty-one billion, five hundred fifteen million, six hundred seventy thousand, eight hundred three".