78242603608833 has 4 divisors (see below), whose sum is σ = 104323471478448. Its totient is φ = 52161735739220.

The previous prime is 78242603608781. The next prime is 78242603608877. The reversal of 78242603608833 is 33880630624287.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78242603608833 - 2¹⁴ = 78242603592449 is a prime.

It is a super-2 number, since 2×78242603608833² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78242603603833) 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, 13040433934803 + ... + 13040433934808.

It is an arithmetic number, because the mean of its divisors is an integer number (26080867869612).

Almost surely, 2^{78242603608833} is an apocalyptic number.

It is an amenable number.

78242603608833 is a deficient number, since it is larger than the sum of its proper divisors (26080867869615).

78242603608833 is a wasteful number, since it uses less digits than its factorization.

78242603608833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26080867869614.

The product of its (nonzero) digits is 55738368, while the sum is 60.

The spelling of 78242603608833 in words is "seventy-eight trillion, two hundred forty-two billion, six hundred three million, six hundred eight thousand, eight hundred thirty-three".