163512943537 has 2 divisors, whose sum is σ = 163512943538. Its totient is φ = 163512943536.

The previous prime is 163512943523. The next prime is 163512943541. The reversal of 163512943537 is 735349215361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101172341776 + 62340601761 = 318076^2 + 249681^2 .

It is a cyclic number.

It is not a de Polignac number, because 163512943537 - 2¹¹ = 163512941489 is a prime.

It is not a weakly prime, because it can be changed into another prime (163512943507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81756471768 + 81756471769.

It is an arithmetic number, because the mean of its divisors is an integer number (81756471769).

Almost surely, 2^163512943537 is an apocalyptic number.

It is an amenable number.

163512943537 is a deficient number, since it is larger than the sum of its proper divisors (1).

163512943537 is an equidigital number, since it uses as much as digits as its factorization.

163512943537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2041200, while the sum is 49.

The spelling of 163512943537 in words is "one hundred sixty-three billion, five hundred twelve million, nine hundred forty-three thousand, five hundred thirty-seven".