165040137352 has 8 divisors (see below), whose sum is σ = 309450257550. Its totient is φ = 82520068672.

The previous prime is 165040137349. The next prime is 165040137373. The reversal of 165040137352 is 253731040561.

It can be written as a sum of positive squares in only one way, i.e., 161801844516 + 3238292836 = 402246^2 + 56906^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10315008577 + ... + 10315008592.

Almost surely, 2^165040137352 is an apocalyptic number.

It is an amenable number.

165040137352 is a deficient number, since it is larger than the sum of its proper divisors (144410120198).

165040137352 is a wasteful number, since it uses less digits than its factorization.

165040137352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20630017175 (or 20630017171 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 37.

The spelling of 165040137352 in words is "one hundred sixty-five billion, forty million, one hundred thirty-seven thousand, three hundred fifty-two".