78431014218871 has 8 divisors (see below), whose sum is σ = 78740966147904. Its totient is φ = 78121213309440.

The previous prime is 78431014218853. The next prime is 78431014218899. The reversal of 78431014218871 is 17881241013487.

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 78431014218871 - 2¹¹ = 78431014216823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78431014216871) 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, 36714106 + ... + 38791591.

It is an arithmetic number, because the mean of its divisors is an integer number (9842620768488).

Almost surely, 2^{78431014218871} is an apocalyptic number.

78431014218871 is a deficient number, since it is larger than the sum of its proper divisors (309951929033).

78431014218871 is a wasteful number, since it uses less digits than its factorization.

78431014218871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75509801.

The product of its (nonzero) digits is 2408448, while the sum is 55.

The spelling of 78431014218871 in words is "seventy-eight trillion, four hundred thirty-one billion, fourteen million, two hundred eighteen thousand, eight hundred seventy-one".