78379288297337 has 2 divisors, whose sum is σ = 78379288297338. Its totient is φ = 78379288297336.

The previous prime is 78379288297333. The next prime is 78379288297367. The reversal of 78379288297337 is 73379288297387.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47709190809856 + 30670097487481 = 6907184^2 + 5538059^2 .

It is a cyclic number.

It is not a de Polignac number, because 78379288297337 - 2² = 78379288297333 is a prime.

It is a super-2 number, since 2×78379288297337² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78379288297333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39189644148668 + 39189644148669.

It is an arithmetic number, because the mean of its divisors is an integer number (39189644148669).

Almost surely, 2^{78379288297337} is an apocalyptic number.

It is an amenable number.

78379288297337 is a deficient number, since it is larger than the sum of its proper divisors (1).

78379288297337 is an equidigital number, since it uses as much as digits as its factorization.

78379288297337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10754021376, while the sum is 83.

The spelling of 78379288297337 in words is "seventy-eight trillion, three hundred seventy-nine billion, two hundred eighty-eight million, two hundred ninety-seven thousand, three hundred thirty-seven".