78421363963 has 8 divisors (see below), whose sum is σ = 79842744576. Its totient is φ = 77008785000.

The previous prime is 78421363939. The next prime is 78421363967. The reversal of 78421363963 is 36936312487.

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 78421363963 - 2²⁵ = 78387809531 is a prime.

It is a super-2 number, since 2×78421363963² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78421363963.

It is not an unprimeable number, because it can be changed into a prime (78421363967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2182431 + ... + 2218072.

It is an arithmetic number, because the mean of its divisors is an integer number (9980343072).

Almost surely, 2^78421363963 is an apocalyptic number.

78421363963 is a deficient number, since it is larger than the sum of its proper divisors (1421380613).

78421363963 is a wasteful number, since it uses less digits than its factorization.

78421363963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4400825.

The product of its digits is 3919104, while the sum is 52.

The spelling of 78421363963 in words is "seventy-eight billion, four hundred twenty-one million, three hundred sixty-three thousand, nine hundred sixty-three".