80143639 has 2 divisors, whose sum is σ = 80143640. Its totient is φ = 80143638.

The previous prime is 80143607. The next prime is 80143669. The reversal of 80143639 is 93634108.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80143639 - 2⁵ = 80143607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80143669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40071819 + 40071820.

It is an arithmetic number, because the mean of its divisors is an integer number (40071820).

Almost surely, 2^80143639 is an apocalyptic number.

80143639 is a deficient number, since it is larger than the sum of its proper divisors (1).

80143639 is an equidigital number, since it uses as much as digits as its factorization.

80143639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 80143639 is about 8952.2979731463. The cubic root of 80143639 is about 431.1446678547.

The spelling of 80143639 in words is "eighty million, one hundred forty-three thousand, six hundred thirty-nine".