162973509443 has 2 divisors, whose sum is σ = 162973509444. Its totient is φ = 162973509442.

The previous prime is 162973509427. The next prime is 162973509499. The reversal of 162973509443 is 344905379261.

It is a weak prime.

It is an emirp because it is prime and its reverse (344905379261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 162973509443 - 2⁴ = 162973509427 is a prime.

It is a super-2 number, since 2×162973509443² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (162973509143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81486754721 + 81486754722.

It is an arithmetic number, because the mean of its divisors is an integer number (81486754722).

Almost surely, 2^162973509443 is an apocalyptic number.

162973509443 is a deficient number, since it is larger than the sum of its proper divisors (1).

162973509443 is an equidigital number, since it uses as much as digits as its factorization.

162973509443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The spelling of 162973509443 in words is "one hundred sixty-two billion, nine hundred seventy-three million, five hundred nine thousand, four hundred forty-three".