78545011 has 2 divisors, whose sum is σ = 78545012. Its totient is φ = 78545010.

The previous prime is 78544967. The next prime is 78545063. The reversal of 78545011 is 11054587.

It is a weak prime.

It is an emirp because it is prime and its reverse (11054587) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78545011 - 2¹³ = 78536819 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78545911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39272505 + 39272506.

It is an arithmetic number, because the mean of its divisors is an integer number (39272506).

Almost surely, 2^78545011 is an apocalyptic number.

78545011 is a deficient number, since it is larger than the sum of its proper divisors (1).

78545011 is an equidigital number, since it uses as much as digits as its factorization.

78545011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 31.

The square root of 78545011 is about 8862.5623270023. The cubic root of 78545011 is about 428.2587071748.

Adding to 78545011 its reverse (11054587), we get a palindrome (89599598).

It can be divided in two parts, 785 and 45011, that added together give a square (45796 = 214²).

The spelling of 78545011 in words is "seventy-eight million, five hundred forty-five thousand, eleven".