78188086583 has 2 divisors, whose sum is σ = 78188086584. Its totient is φ = 78188086582.

The previous prime is 78188086549. The next prime is 78188086597. The reversal of 78188086583 is 38568088187.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78188086583 - 2¹² = 78188082487 is a prime.

It is a super-2 number, since 2×78188086583² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78188086513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39094043291 + 39094043292.

It is an arithmetic number, because the mean of its divisors is an integer number (39094043292).

Almost surely, 2^78188086583 is an apocalyptic number.

78188086583 is a deficient number, since it is larger than the sum of its proper divisors (1).

78188086583 is an equidigital number, since it uses as much as digits as its factorization.

78188086583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20643840, while the sum is 62.

The spelling of 78188086583 in words is "seventy-eight billion, one hundred eighty-eight million, eighty-six thousand, five hundred eighty-three".