162391563557 has 2 divisors, whose sum is σ = 162391563558. Its totient is φ = 162391563556.

The previous prime is 162391563547. The next prime is 162391563559. The reversal of 162391563557 is 755365193261.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114730560961 + 47661002596 = 338719^2 + 218314^2 .

It is a cyclic number.

It is not a de Polignac number, because 162391563557 - 2¹⁰ = 162391562533 is a prime.

Together with 162391563559, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 162391563499 and 162391563508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162391563559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81195781778 + 81195781779.

It is an arithmetic number, because the mean of its divisors is an integer number (81195781779).

Almost surely, 2^162391563557 is an apocalyptic number.

It is an amenable number.

162391563557 is a deficient number, since it is larger than the sum of its proper divisors (1).

162391563557 is an equidigital number, since it uses as much as digits as its factorization.

162391563557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5103000, while the sum is 53.

The spelling of 162391563557 in words is "one hundred sixty-two billion, three hundred ninety-one million, five hundred sixty-three thousand, five hundred fifty-seven".