78350771 has 2 divisors, whose sum is σ = 78350772. Its totient is φ = 78350770.

The previous prime is 78350759. The next prime is 78350777. The reversal of 78350771 is 17705387.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78350771 - 2¹⁸ = 78088627 is a prime.

It is a super-2 number, since 2×78350771² = 12277686632588882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78350777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39175385 + 39175386.

It is an arithmetic number, because the mean of its divisors is an integer number (39175386).

Almost surely, 2^78350771 is an apocalyptic number.

78350771 is a deficient number, since it is larger than the sum of its proper divisors (1).

78350771 is an equidigital number, since it uses as much as digits as its factorization.

78350771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41160, while the sum is 38.

The square root of 78350771 is about 8851.5970875317. The cubic root of 78350771 is about 427.9053911331.

The spelling of 78350771 in words is "seventy-eight million, three hundred fifty thousand, seven hundred seventy-one".