165499726130 has 16 divisors (see below), whose sum is σ = 297917400600. Its totient is φ = 66195914112.

The previous prime is 165499726123. The next prime is 165499726177. The reversal of 165499726130 is 31627994561.

It can be written as a sum of positive squares in 4 ways, for example, as 89443463041 + 76056263089 = 299071^2 + 275783^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319205 + ... + 657944.

Almost surely, 2^165499726130 is an apocalyptic number.

165499726130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165499726130 is a deficient number, since it is larger than the sum of its proper divisors (132417674470).

165499726130 is a wasteful number, since it uses less digits than its factorization.

165499726130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994093.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The spelling of 165499726130 in words is "one hundred sixty-five billion, four hundred ninety-nine million, seven hundred twenty-six thousand, one hundred thirty".