80156423 has 2 divisors, whose sum is σ = 80156424. Its totient is φ = 80156422.

The previous prime is 80156399. The next prime is 80156441. The reversal of 80156423 is 32465108.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80156423 - 2¹² = 80152327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80156473) 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, 40078211 + 40078212.

It is an arithmetic number, because the mean of its divisors is an integer number (40078212).

Almost surely, 2^80156423 is an apocalyptic number.

80156423 is a deficient number, since it is larger than the sum of its proper divisors (1).

80156423 is an equidigital number, since it uses as much as digits as its factorization.

80156423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 80156423 is about 8953.0119512933. The cubic root of 80156423 is about 431.1675911145.

The spelling of 80156423 in words is "eighty million, one hundred fifty-six thousand, four hundred twenty-three".