78741101 has 2 divisors, whose sum is σ = 78741102. Its totient is φ = 78741100.

The previous prime is 78741067. The next prime is 78741109. The reversal of 78741101 is 10114787.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66031876 + 12709225 = 8126^2 + 3565^2 .

It is a cyclic number.

It is not a de Polignac number, because 78741101 - 2⁶ = 78741037 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78741109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39370550 + 39370551.

It is an arithmetic number, because the mean of its divisors is an integer number (39370551).

Almost surely, 2^78741101 is an apocalyptic number.

It is an amenable number.

78741101 is a deficient number, since it is larger than the sum of its proper divisors (1).

78741101 is an equidigital number, since it uses as much as digits as its factorization.

78741101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 29.

The square root of 78741101 is about 8873.6182586361. The cubic root of 78741101 is about 428.6147979550.

Adding to 78741101 its reverse (10114787), we get a palindrome (88855888).

The spelling of 78741101 in words is "seventy-eight million, seven hundred forty-one thousand, one hundred one".