166759151137 has 4 divisors (see below), whose sum is σ = 167680472596. Its totient is φ = 165837829680.

The previous prime is 166759151131. The next prime is 166759151201. The reversal of 166759151137 is 731151957661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10389521041 + 156369630096 = 101929^2 + 395436^2 .

It is a cyclic number.

It is not a de Polignac number, because 166759151137 - 2¹⁹ = 166758626849 is a prime.

It is a super-2 number, since 2×166759151137² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166759151131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 460660458 + ... + 460660819.

It is an arithmetic number, because the mean of its divisors is an integer number (41920118149).

Almost surely, 2^166759151137 is an apocalyptic number.

It is an amenable number.

166759151137 is a deficient number, since it is larger than the sum of its proper divisors (921321459).

166759151137 is an equidigital number, since it uses as much as digits as its factorization.

166759151137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921321458.

The product of its digits is 1190700, while the sum is 52.

The spelling of 166759151137 in words is "one hundred sixty-six billion, seven hundred fifty-nine million, one hundred fifty-one thousand, one hundred thirty-seven".