78421363163 has 16 divisors (see below), whose sum is σ = 92139986400. Its totient is φ = 65801998080.

The previous prime is 78421363081. The next prime is 78421363199. The reversal of 78421363163 is 36136312487.

It is not a de Polignac number, because 78421363163 - 2²⁸ = 78152927707 is a prime.

It is a super-2 number, since 2×78421363163² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78421323163) 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, 2168393 + ... + 2204261.

It is an arithmetic number, because the mean of its divisors is an integer number (5758749150).

Almost surely, 2^78421363163 is an apocalyptic number.

78421363163 is a deficient number, since it is larger than the sum of its proper divisors (13718623237).

78421363163 is a wasteful number, since it uses less digits than its factorization.

78421363163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51182.

The product of its digits is 435456, while the sum is 44.

The spelling of 78421363163 in words is "seventy-eight billion, four hundred twenty-one million, three hundred sixty-three thousand, one hundred sixty-three".