168132451499 has 2 divisors, whose sum is σ = 168132451500. Its totient is φ = 168132451498.

The previous prime is 168132451469. The next prime is 168132451567. The reversal of 168132451499 is 994154231861.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168132451499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168132451499.

It is not a weakly prime, because it can be changed into another prime (168132451439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84066225749 + 84066225750.

It is an arithmetic number, because the mean of its divisors is an integer number (84066225750).

Almost surely, 2^168132451499 is an apocalyptic number.

168132451499 is a deficient number, since it is larger than the sum of its proper divisors (1).

168132451499 is an equidigital number, since it uses as much as digits as its factorization.

168132451499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 53.

The spelling of 168132451499 in words is "one hundred sixty-eight billion, one hundred thirty-two million, four hundred fifty-one thousand, four hundred ninety-nine".