78327601087 has 2 divisors, whose sum is σ = 78327601088. Its totient is φ = 78327601086.

The previous prime is 78327601049. The next prime is 78327601109. The reversal of 78327601087 is 78010672387.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78327601087 is a prime.

It is a super-2 number, since 2×78327601087² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78327601087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78327601007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39163800543 + 39163800544.

It is an arithmetic number, because the mean of its divisors is an integer number (39163800544).

Almost surely, 2^78327601087 is an apocalyptic number.

78327601087 is a deficient number, since it is larger than the sum of its proper divisors (1).

78327601087 is an equidigital number, since it uses as much as digits as its factorization.

78327601087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 790272, while the sum is 49.

The spelling of 78327601087 in words is "seventy-eight billion, three hundred twenty-seven million, six hundred one thousand, eighty-seven".