78175272337 has 2 divisors, whose sum is σ = 78175272338. Its totient is φ = 78175272336.

The previous prime is 78175272317. The next prime is 78175272359. The reversal of 78175272337 is 73327257187.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65845612816 + 12329659521 = 256604^2 + 111039^2 .

It is an emirp because it is prime and its reverse (73327257187) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78175272337 - 2¹⁹ = 78174748049 is a prime.

It is a super-2 number, since 2×78175272337² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78175272317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39087636168 + 39087636169.

It is an arithmetic number, because the mean of its divisors is an integer number (39087636169).

Almost surely, 2^78175272337 is an apocalyptic number.

It is an amenable number.

78175272337 is a deficient number, since it is larger than the sum of its proper divisors (1).

78175272337 is an equidigital number, since it uses as much as digits as its factorization.

78175272337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3457440, while the sum is 52.

The spelling of 78175272337 in words is "seventy-eight billion, one hundred seventy-five million, two hundred seventy-two thousand, three hundred thirty-seven".