162278232901 has 2 divisors, whose sum is σ = 162278232902. Its totient is φ = 162278232900.

The previous prime is 162278232887. The next prime is 162278232923. The reversal of 162278232901 is 109232872261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118177812900 + 44100420001 = 343770^2 + 210001^2 .

It is an emirp because it is prime and its reverse (109232872261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162278232901 - 2¹¹ = 162278230853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162278232931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81139116450 + 81139116451.

It is an arithmetic number, because the mean of its divisors is an integer number (81139116451).

Almost surely, 2^162278232901 is an apocalyptic number.

It is an amenable number.

162278232901 is a deficient number, since it is larger than the sum of its proper divisors (1).

162278232901 is an equidigital number, since it uses as much as digits as its factorization.

162278232901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 162278232901 in words is "one hundred sixty-two billion, two hundred seventy-eight million, two hundred thirty-two thousand, nine hundred one".