78441804337 has 8 divisors (see below), whose sum is σ = 84508056360. Its totient is φ = 72380161920.

The previous prime is 78441804319. The next prime is 78441804383. The reversal of 78441804337 is 73340814487.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17411066401 + 61030737936 = 131951^2 + 247044^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78441804337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78441804137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1117012 + ... + 1185157.

It is an arithmetic number, because the mean of its divisors is an integer number (10563507045).

Almost surely, 2^78441804337 is an apocalyptic number.

It is an amenable number.

78441804337 is a deficient number, since it is larger than the sum of its proper divisors (6066252023).

78441804337 is a wasteful number, since it uses less digits than its factorization.

78441804337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304803.

The product of its (nonzero) digits is 1806336, while the sum is 49.

It can be divided in two parts, 7844 and 1804337, that added together give a palindrome (1812181).

The spelling of 78441804337 in words is "seventy-eight billion, four hundred forty-one million, eight hundred four thousand, three hundred thirty-seven".