78132361 has 2 divisors, whose sum is σ = 78132362. Its totient is φ = 78132360.

The previous prime is 78132349. The next prime is 78132371. The reversal of 78132361 is 16323187.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76737600 + 1394761 = 8760^2 + 1181^2 .

It is a cyclic number.

It is not a de Polignac number, because 78132361 - 2⁷ = 78132233 is a prime.

It is a super-2 number, since 2×78132361² = 12209331670868642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78132371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39066180 + 39066181.

It is an arithmetic number, because the mean of its divisors is an integer number (39066181).

Almost surely, 2^78132361 is an apocalyptic number.

It is an amenable number.

78132361 is a deficient number, since it is larger than the sum of its proper divisors (1).

78132361 is an equidigital number, since it uses as much as digits as its factorization.

78132361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 78132361 is about 8839.2511560652. The cubic root of 78132361 is about 427.5074125227.

The spelling of 78132361 in words is "seventy-eight million, one hundred thirty-two thousand, three hundred sixty-one".