163757138477 has 2 divisors, whose sum is σ = 163757138478. Its totient is φ = 163757138476.

The previous prime is 163757138473. The next prime is 163757138537. The reversal of 163757138477 is 774831757361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119379924196 + 44377214281 = 345514^2 + 210659^2 .

It is an emirp because it is prime and its reverse (774831757361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163757138477 - 2² = 163757138473 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163757138473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81878569238 + 81878569239.

It is an arithmetic number, because the mean of its divisors is an integer number (81878569239).

Almost surely, 2^163757138477 is an apocalyptic number.

It is an amenable number.

163757138477 is a deficient number, since it is larger than the sum of its proper divisors (1).

163757138477 is an equidigital number, since it uses as much as digits as its factorization.

163757138477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20744640, while the sum is 59.

The spelling of 163757138477 in words is "one hundred sixty-three billion, seven hundred fifty-seven million, one hundred thirty-eight thousand, four hundred seventy-seven".