166528832737 has 2 divisors, whose sum is σ = 166528832738. Its totient is φ = 166528832736.

The previous prime is 166528832683. The next prime is 166528832753. The reversal of 166528832737 is 737238825661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125270692096 + 41258140641 = 353936^2 + 203121^2 .

It is a cyclic number.

It is not a de Polignac number, because 166528832737 - 2¹⁹ = 166528308449 is a prime.

It is a super-2 number, since 2×166528832737² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (166528832537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83264416368 + 83264416369.

It is an arithmetic number, because the mean of its divisors is an integer number (83264416369).

Almost surely, 2^166528832737 is an apocalyptic number.

It is an amenable number.

166528832737 is a deficient number, since it is larger than the sum of its proper divisors (1).

166528832737 is an equidigital number, since it uses as much as digits as its factorization.

166528832737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20321280, while the sum is 58.

The spelling of 166528832737 in words is "one hundred sixty-six billion, five hundred twenty-eight million, eight hundred thirty-two thousand, seven hundred thirty-seven".