78324011 has 4 divisors (see below), whose sum is σ = 80850624. Its totient is φ = 75797400.

The previous prime is 78324007. The next prime is 78324013. The reversal of 78324011 is 11042387.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11042387 = 479 ⋅23053.

It is a cyclic number.

It is not a de Polignac number, because 78324011 - 2² = 78324007 is a prime.

It is a super-2 number, since 2×78324011² = 12269301398256242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78324013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1263260 + ... + 1263321.

It is an arithmetic number, because the mean of its divisors is an integer number (20212656).

Almost surely, 2^78324011 is an apocalyptic number.

78324011 is a deficient number, since it is larger than the sum of its proper divisors (2526613).

78324011 is a wasteful number, since it uses less digits than its factorization.

78324011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526612.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 78324011 is about 8850.0853668199. The cubic root of 78324011 is about 427.8566698421.

Adding to 78324011 its reverse (11042387), we get a palindrome (89366398).

The spelling of 78324011 in words is "seventy-eight million, three hundred twenty-four thousand, eleven".