78467085953 has 2 divisors, whose sum is σ = 78467085954. Its totient is φ = 78467085952.

The previous prime is 78467085919. The next prime is 78467085971. The reversal of 78467085953 is 35958076487.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65151541504 + 13315544449 = 255248^2 + 115393^2 .

It is an emirp because it is prime and its reverse (35958076487) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78467085953 - 2²⁴ = 78450308737 is a prime.

It is not a weakly prime, because it can be changed into another prime (78467084953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39233542976 + 39233542977.

It is an arithmetic number, because the mean of its divisors is an integer number (39233542977).

Almost surely, 2^78467085953 is an apocalyptic number.

It is an amenable number.

78467085953 is a deficient number, since it is larger than the sum of its proper divisors (1).

78467085953 is an equidigital number, since it uses as much as digits as its factorization.

78467085953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50803200, while the sum is 62.

The spelling of 78467085953 in words is "seventy-eight billion, four hundred sixty-seven million, eighty-five thousand, nine hundred fifty-three".