78846704552377 has 2 divisors, whose sum is σ = 78846704552378. Its totient is φ = 78846704552376.

The previous prime is 78846704552333. The next prime is 78846704552389. The reversal of 78846704552377 is 77325540764887.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75913075521721 + 2933629030656 = 8712811^2 + 1712784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78846704552377 is a prime.

It is not a weakly prime, because it can be changed into another prime (78846704552477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39423352276188 + 39423352276189.

It is an arithmetic number, because the mean of its divisors is an integer number (39423352276189).

Almost surely, 2^{78846704552377} is an apocalyptic number.

It is an amenable number.

78846704552377 is a deficient number, since it is larger than the sum of its proper divisors (1).

78846704552377 is an equidigital number, since it uses as much as digits as its factorization.

78846704552377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2212761600, while the sum is 73.

The spelling of 78846704552377 in words is "seventy-eight trillion, eight hundred forty-six billion, seven hundred four million, five hundred fifty-two thousand, three hundred seventy-seven".