78635703233 has 2 divisors, whose sum is σ = 78635703234. Its totient is φ = 78635703232.

The previous prime is 78635703193. The next prime is 78635703253. The reversal of 78635703233 is 33230753687.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52738203904 + 25897499329 = 229648^2 + 160927^2 .

It is an emirp because it is prime and its reverse (33230753687) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78635703233 - 2¹⁴ = 78635686849 is a prime.

It is not a weakly prime, because it can be changed into another prime (78635703253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39317851616 + 39317851617.

It is an arithmetic number, because the mean of its divisors is an integer number (39317851617).

Almost surely, 2^78635703233 is an apocalyptic number.

It is an amenable number.

78635703233 is a deficient number, since it is larger than the sum of its proper divisors (1).

78635703233 is an equidigital number, since it uses as much as digits as its factorization.

78635703233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1905120, while the sum is 47.

The spelling of 78635703233 in words is "seventy-eight billion, six hundred thirty-five million, seven hundred three thousand, two hundred thirty-three".