78218825432331 has 8 divisors (see below), whose sum is σ = 105720421589200. Its totient is φ = 51431556448512.

The previous prime is 78218825432323. The next prime is 78218825432339. The reversal of 78218825432331 is 13323452881287.

It is an interprime number because it is at equal distance from previous prime (78218825432323) and next prime (78218825432339).

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

It is not a de Polignac number, because 78218825432331 - 2³ = 78218825432323 is a prime.

It is a super-2 number, since 2×78218825432331² (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 (78218825432339) 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, 178581793006 + ... + 178581793443.

It is an arithmetic number, because the mean of its divisors is an integer number (13215052698650).

Almost surely, 2^{78218825432331} is an apocalyptic number.

78218825432331 is a deficient number, since it is larger than the sum of its proper divisors (27501596156869).

78218825432331 is a wasteful number, since it uses less digits than its factorization.

78218825432331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357163586525.

The product of its digits is 15482880, while the sum is 57.

The spelling of 78218825432331 in words is "seventy-eight trillion, two hundred eighteen billion, eight hundred twenty-five million, four hundred thirty-two thousand, three hundred thirty-one".