78452911 has 2 divisors, whose sum is σ = 78452912. Its totient is φ = 78452910.

The previous prime is 78452897. The next prime is 78452939. The reversal of 78452911 is 11925487.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78452911 - 2⁷ = 78452783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78452951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39226455 + 39226456.

It is an arithmetic number, because the mean of its divisors is an integer number (39226456).

Almost surely, 2^78452911 is an apocalyptic number.

78452911 is a deficient number, since it is larger than the sum of its proper divisors (1).

78452911 is an equidigital number, since it uses as much as digits as its factorization.

78452911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 37.

The square root of 78452911 is about 8857.3647886942. The cubic root of 78452911 is about 428.0912530702.

The spelling of 78452911 in words is "seventy-eight million, four hundred fifty-two thousand, nine hundred eleven".