78150727 has 2 divisors, whose sum is σ = 78150728. Its totient is φ = 78150726.

The previous prime is 78150719. The next prime is 78150731. The reversal of 78150727 is 72705187.

It is a strong prime.

It is an emirp because it is prime and its reverse (72705187) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78150727 - 2³ = 78150719 is a prime.

It is a super-2 number, since 2×78150727² = 12215072261257058, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78150827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39075363 + 39075364.

It is an arithmetic number, because the mean of its divisors is an integer number (39075364).

Almost surely, 2^78150727 is an apocalyptic number.

78150727 is a deficient number, since it is larger than the sum of its proper divisors (1).

78150727 is an equidigital number, since it uses as much as digits as its factorization.

78150727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27440, while the sum is 37.

The square root of 78150727 is about 8840.2899839315. The cubic root of 78150727 is about 427.5409069071.

The spelling of 78150727 in words is "seventy-eight million, one hundred fifty thousand, seven hundred twenty-seven".