78344586241 has 8 divisors (see below), whose sum is σ = 82982382120. Its totient is φ = 73710044928.

The previous prime is 78344586239. The next prime is 78344586293. The reversal of 78344586241 is 14268544387.

It can be written as a sum of positive squares in 4 ways, for example, as 6200775025 + 72143811216 = 78745^2 + 268596^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 78344586241 - 2¹ = 78344586239 is a prime.

It is a super-2 number, since 2×78344586241² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78344583241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 763986 + ... + 860443.

It is an arithmetic number, because the mean of its divisors is an integer number (10372797765).

Almost surely, 2^78344586241 is an apocalyptic number.

It is an amenable number.

78344586241 is a deficient number, since it is larger than the sum of its proper divisors (4637795879).

78344586241 is a wasteful number, since it uses less digits than its factorization.

78344586241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1627283.

The product of its digits is 5160960, while the sum is 52.

The spelling of 78344586241 in words is "seventy-eight billion, three hundred forty-four million, five hundred eighty-six thousand, two hundred forty-one".