78983537156 has 12 divisors (see below), whose sum is σ = 138274513692. Its totient is φ = 39476533248.

The previous prime is 78983537137. The next prime is 78983537161. The reversal of 78983537156 is 65173538987.

It can be written as a sum of positive squares in 2 ways, for example, as 62892614656 + 16090922500 = 250784^2 + 126850^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3797165 + ... + 3817908.

It is an arithmetic number, because the mean of its divisors is an integer number (11522876141).

Almost surely, 2^78983537156 is an apocalyptic number.

It is an amenable number.

78983537156 is a deficient number, since it is larger than the sum of its proper divisors (59290976536).

78983537156 is a wasteful number, since it uses less digits than its factorization.

78983537156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7617670 (or 7617668 counting only the distinct ones).

The product of its digits is 38102400, while the sum is 62.

The spelling of 78983537156 in words is "seventy-eight billion, nine hundred eighty-three million, five hundred thirty-seven thousand, one hundred fifty-six".