78851438167 has 16 divisors (see below), whose sum is σ = 83628720000. Its totient is φ = 74137724064.

The previous prime is 78851438123. The next prime is 78851438201. The reversal of 78851438167 is 76183415887.

It is a cyclic number.

It is not a de Polignac number, because 78851438167 - 2²³ = 78843049559 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 (78851432167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3553168 + ... + 3575290.

It is an arithmetic number, because the mean of its divisors is an integer number (5226795000).

Almost surely, 2^78851438167 is an apocalyptic number.

78851438167 is a deficient number, since it is larger than the sum of its proper divisors (4777281833).

78851438167 is a wasteful number, since it uses less digits than its factorization.

78851438167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23550.

The product of its digits is 9031680, while the sum is 58.

The spelling of 78851438167 in words is "seventy-eight billion, eight hundred fifty-one million, four hundred thirty-eight thousand, one hundred sixty-seven".