78411143 has 2 divisors, whose sum is σ = 78411144. Its totient is φ = 78411142.

The previous prime is 78411131. The next prime is 78411149. The reversal of 78411143 is 34111487.

It is a strong prime.

It is an emirp because it is prime and its reverse (34111487) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78411143 - 2⁴ = 78411127 is a prime.

It is a super-2 number, since 2×78411143² = 12296614693132898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78411149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39205571 + 39205572.

It is an arithmetic number, because the mean of its divisors is an integer number (39205572).

Almost surely, 2^78411143 is an apocalyptic number.

78411143 is a deficient number, since it is larger than the sum of its proper divisors (1).

78411143 is an equidigital number, since it uses as much as digits as its factorization.

78411143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 29.

The square root of 78411143 is about 8855.0066628998. The cubic root of 78411143 is about 428.0152682561.

The spelling of 78411143 in words is "seventy-eight million, four hundred eleven thousand, one hundred forty-three".