165526643051 has 8 divisors (see below), whose sum is σ = 206370879744. Its totient is φ = 128981799720.

The previous prime is 165526643047. The next prime is 165526643081. The reversal of 165526643051 is 150346625561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 165526643051 - 2² = 165526643047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165526642993 and 165526643011.

It is not an unprimeable number, because it can be changed into a prime (165526643021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1074848255 + ... + 1074848408.

It is an arithmetic number, because the mean of its divisors is an integer number (25796359968).

Almost surely, 2^165526643051 is an apocalyptic number.

165526643051 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

165526643051 is a deficient number, since it is larger than the sum of its proper divisors (40844236693).

165526643051 is a wasteful number, since it uses less digits than its factorization.

165526643051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149696681.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 165526643051 in words is "one hundred sixty-five billion, five hundred twenty-six million, six hundred forty-three thousand, fifty-one".