78543782153 has 2 divisors, whose sum is σ = 78543782154. Its totient is φ = 78543782152.

The previous prime is 78543782129. The next prime is 78543782179. The reversal of 78543782153 is 35128734587.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61260210064 + 17283572089 = 247508^2 + 131467^2 .

It is a cyclic number.

It is not a de Polignac number, because 78543782153 - 2⁶ = 78543782089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78543782095 and 78543782104.

It is not a weakly prime, because it can be changed into another prime (78543782753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39271891076 + 39271891077.

It is an arithmetic number, because the mean of its divisors is an integer number (39271891077).

Almost surely, 2^78543782153 is an apocalyptic number.

It is an amenable number.

78543782153 is a deficient number, since it is larger than the sum of its proper divisors (1).

78543782153 is an equidigital number, since it uses as much as digits as its factorization.

78543782153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5644800, while the sum is 53.

The spelling of 78543782153 in words is "seventy-eight billion, five hundred forty-three million, seven hundred eighty-two thousand, one hundred fifty-three".