78983000321 has 2 divisors, whose sum is σ = 78983000322. Its totient is φ = 78983000320.

The previous prime is 78983000311. The next prime is 78983000347. The reversal of 78983000321 is 12300038987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66205863025 + 12777137296 = 257305^2 + 113036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78983000321 is a prime.

It is a super-2 number, since 2×78983000321² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78983000311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39491500160 + 39491500161.

It is an arithmetic number, because the mean of its divisors is an integer number (39491500161).

Almost surely, 2^78983000321 is an apocalyptic number.

It is an amenable number.

78983000321 is a deficient number, since it is larger than the sum of its proper divisors (1).

78983000321 is an equidigital number, since it uses as much as digits as its factorization.

78983000321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 78983000321 in words is "seventy-eight billion, nine hundred eighty-three million, three hundred twenty-one", and thus it is an aban number.