165308029090 has 32 divisors (see below), whose sum is σ = 310606285104. Its totient is φ = 63281399040.

The previous prime is 165308029037. The next prime is 165308029091. The reversal of 165308029090 is 90920803561.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 17111517721 + 148196511369 = 130811^2 + 384963^2 .

It is not an unprimeable number, because it can be changed into a prime (165308029091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3639549 + ... + 3684688.

Almost surely, 2^165308029090 is an apocalyptic number.

165308029090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165308029090 is a deficient number, since it is larger than the sum of its proper divisors (145298256014).

165308029090 is a wasteful number, since it uses less digits than its factorization.

165308029090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7324342.

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 165308029090 in words is "one hundred sixty-five billion, three hundred eight million, twenty-nine thousand, ninety".