78341101 has 2 divisors, whose sum is σ = 78341102. Its totient is φ = 78341100.

The previous prime is 78341089. The next prime is 78341111. The reversal of 78341101 is 10114387.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78340201 + 900 = 8851^2 + 30^2 .

It is a cyclic number.

It is not a de Polignac number, because 78341101 - 2⁵ = 78341069 is a prime.

It is a super-2 number, since 2×78341101² = 12274656211784402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78341111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39170550 + 39170551.

It is an arithmetic number, because the mean of its divisors is an integer number (39170551).

Almost surely, 2^78341101 is an apocalyptic number.

It is an amenable number.

78341101 is a deficient number, since it is larger than the sum of its proper divisors (1).

78341101 is an equidigital number, since it uses as much as digits as its factorization.

78341101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 78341101 is about 8851.0508415668. The cubic root of 78341101 is about 427.8877864760.

Adding to 78341101 its reverse (10114387), we get a palindrome (88455488).

The spelling of 78341101 in words is "seventy-eight million, three hundred forty-one thousand, one hundred one".