78873066317783 has 2 divisors, whose sum is σ = 78873066317784. Its totient is φ = 78873066317782.

The previous prime is 78873066317671. The next prime is 78873066317839. The reversal of 78873066317783 is 38771366037887.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78873066317783 - 2¹⁸ = 78873066055639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78873066317783.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78873066517783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39436533158891 + 39436533158892.

It is an arithmetic number, because the mean of its divisors is an integer number (39436533158892).

Almost surely, 2^{78873066317783} is an apocalyptic number.

78873066317783 is a deficient number, since it is larger than the sum of its proper divisors (1).

78873066317783 is an equidigital number, since it uses as much as digits as its factorization.

78873066317783 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1194891264, while the sum is 74.

The spelling of 78873066317783 in words is "seventy-eight trillion, eight hundred seventy-three billion, sixty-six million, three hundred seventeen thousand, seven hundred eighty-three".