78265333441 has 4 divisors (see below), whose sum is σ = 79144719300. Its totient is φ = 77385947584.

The previous prime is 78265333439. The next prime is 78265333453. The reversal of 78265333441 is 14433356287.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37906532416 + 40358801025 = 194696^2 + 200895^2 .

It is a cyclic number.

It is not a de Polignac number, because 78265333441 - 2¹ = 78265333439 is a prime.

It is a super-2 number, since 2×78265333441² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78265333391 and 78265333400.

It is not an unprimeable number, because it can be changed into a prime (78265333241) 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, 439692796 + ... + 439692973.

It is an arithmetic number, because the mean of its divisors is an integer number (19786179825).

Almost surely, 2^78265333441 is an apocalyptic number.

It is an amenable number.

78265333441 is a deficient number, since it is larger than the sum of its proper divisors (879385859).

78265333441 is an equidigital number, since it uses as much as digits as its factorization.

78265333441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879385858.

The product of its digits is 1451520, while the sum is 46.

The spelling of 78265333441 in words is "seventy-eight billion, two hundred sixty-five million, three hundred thirty-three thousand, four hundred forty-one".