165036563451101 has 4 divisors (see below), whose sum is σ = 173722698369600. Its totient is φ = 156350428532604.

The previous prime is 165036563451017. The next prime is 165036563451143. The reversal of 165036563451101 is 101154365630561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165036563451101 is a prime.

It is a super-2 number, since 2×165036563451101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165036563451901) 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, 4343067459221 + ... + 4343067459258.

It is an arithmetic number, because the mean of its divisors is an integer number (43430674592400).

Almost surely, 2^{165036563451101} is an apocalyptic number.

It is an amenable number.

165036563451101 is a deficient number, since it is larger than the sum of its proper divisors (8686134918499).

165036563451101 is an equidigital number, since it uses as much as digits as its factorization.

165036563451101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8686134918498.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 165036563451101 in words is "one hundred sixty-five trillion, thirty-six billion, five hundred sixty-three million, four hundred fifty-one thousand, one hundred one".