81514750147 has 2 divisors, whose sum is σ = 81514750148. Its totient is φ = 81514750146.

The previous prime is 81514750127. The next prime is 81514750157. The reversal of 81514750147 is 74105741518.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 81514750147 - 2¹¹ = 81514748099 is a prime.

It is not a weakly prime, because it can be changed into another prime (81514750127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40757375073 + 40757375074.

It is an arithmetic number, because the mean of its divisors is an integer number (40757375074).

Almost surely, 2^81514750147 is an apocalyptic number.

81514750147 is a deficient number, since it is larger than the sum of its proper divisors (1).

81514750147 is an equidigital number, since it uses as much as digits as its factorization.

81514750147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 156800, while the sum is 43.

The spelling of 81514750147 in words is "eighty-one billion, five hundred fourteen million, seven hundred fifty thousand, one hundred forty-seven".