162768867749 has 4 divisors (see below), whose sum is σ = 162794559564. Its totient is φ = 162743175936.

The previous prime is 162768867727. The next prime is 162768867761. The reversal of 162768867749 is 947768867261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 947768867261 = 4157 ⋅227993473.

It can be written as a sum of positive squares in 2 ways, for example, as 84806176225 + 77962691524 = 291215^2 + 279218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162768867749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162768863749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12836402 + ... + 12849075.

It is an arithmetic number, because the mean of its divisors is an integer number (40698639891).

Almost surely, 2^162768867749 is an apocalyptic number.

It is an amenable number.

162768867749 is a deficient number, since it is larger than the sum of its proper divisors (25691815).

162768867749 is an equidigital number, since it uses as much as digits as its factorization.

162768867749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25691814.

The product of its digits is 341397504, while the sum is 71.

The spelling of 162768867749 in words is "one hundred sixty-two billion, seven hundred sixty-eight million, eight hundred sixty-seven thousand, seven hundred forty-nine".