78339798963 has 12 divisors (see below), whose sum is σ = 114707590920. Its totient is φ = 51511100256.

The previous prime is 78339798961. The next prime is 78339799009. The reversal of 78339798963 is 36989793387.

It is not a de Polignac number, because 78339798963 - 2¹ = 78339798961 is a prime.

It is a super-2 number, since 2×78339798963² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78339798891 and 78339798900.

It is not an unprimeable number, because it can be changed into a prime (78339798961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59618673 + ... + 59619986.

It is an arithmetic number, because the mean of its divisors is an integer number (9558965910).

Almost surely, 2^78339798963 is an apocalyptic number.

78339798963 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

78339798963 is a deficient number, since it is larger than the sum of its proper divisors (36367791957).

78339798963 is a wasteful number, since it uses less digits than its factorization.

78339798963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119238738 (or 119238735 counting only the distinct ones).

The product of its digits is 370355328, while the sum is 72.

The spelling of 78339798963 in words is "seventy-eight billion, three hundred thirty-nine million, seven hundred ninety-eight thousand, nine hundred sixty-three".