78823792616 has 64 divisors (see below), whose sum is σ = 156344904000. Its totient is φ = 37256101056.

The previous prime is 78823792589. The next prime is 78823792657. The reversal of 78823792616 is 61629732887.

It is a happy number.

It is a super-2 number, since 2×78823792616² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30562415 + ... + 30564993.

It is an arithmetic number, because the mean of its divisors is an integer number (2442889125).

Almost surely, 2^78823792616 is an apocalyptic number.

78823792616 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

78823792616 is a deficient number, since it is larger than the sum of its proper divisors (77521111384).

78823792616 is a wasteful number, since it uses less digits than its factorization.

78823792616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3199 (or 3157 counting only the distinct ones).

The product of its digits is 12192768, while the sum is 59.

The spelling of 78823792616 in words is "seventy-eight billion, eight hundred twenty-three million, seven hundred ninety-two thousand, six hundred sixteen".