80078651 has 2 divisors, whose sum is σ = 80078652. Its totient is φ = 80078650.

The previous prime is 80078639. The next prime is 80078717. The reversal of 80078651 is 15687008.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80078651 - 2¹⁴ = 80062267 is a prime.

It is not a weakly prime, because it can be changed into another prime (80078351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40039325 + 40039326.

It is an arithmetic number, because the mean of its divisors is an integer number (40039326).

Almost surely, 2^80078651 is an apocalyptic number.

80078651 is a deficient number, since it is larger than the sum of its proper divisors (1).

80078651 is an equidigital number, since it uses as much as digits as its factorization.

80078651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 80078651 is about 8948.6675544463. The cubic root of 80078651 is about 431.0280987920.

The spelling of 80078651 in words is "eighty million, seventy-eight thousand, six hundred fifty-one".