78168107 has 2 divisors, whose sum is σ = 78168108. Its totient is φ = 78168106.

The previous prime is 78168073. The next prime is 78168113. The reversal of 78168107 is 70186187.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78168107 - 2⁶ = 78168043 is a prime.

It is a super-2 number, since 2×78168107² = 12220505903926898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78168127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39084053 + 39084054.

It is an arithmetic number, because the mean of its divisors is an integer number (39084054).

Almost surely, 2^78168107 is an apocalyptic number.

78168107 is a deficient number, since it is larger than the sum of its proper divisors (1).

78168107 is an equidigital number, since it uses as much as digits as its factorization.

78168107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 38.

The square root of 78168107 is about 8841.2729287134. The cubic root of 78168107 is about 427.5725982745.

The spelling of 78168107 in words is "seventy-eight million, one hundred sixty-eight thousand, one hundred seven".