165376772026 has 8 divisors (see below), whose sum is σ = 248730213204. Its totient is φ = 82466700960.

The previous prime is 165376772023. The next prime is 165376772039. The reversal of 165376772026 is 620277673561.

It can be written as a sum of positive squares in 2 ways, for example, as 154723435801 + 10653336225 = 393349^2 + 103215^2 .

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

It is a super-2 number, since 2×165376772026² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165376772023) 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, 110841595 + ... + 110843086.

Almost surely, 2^165376772026 is an apocalyptic number.

165376772026 is a deficient number, since it is larger than the sum of its proper divisors (83353441178).

165376772026 is a wasteful number, since it uses less digits than its factorization.

165376772026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221685056.

The product of its (nonzero) digits is 4445280, while the sum is 52.

The spelling of 165376772026 in words is "one hundred sixty-five billion, three hundred seventy-six million, seven hundred seventy-two thousand, twenty-six".