165050813770 has 8 divisors (see below), whose sum is σ = 297091464804. Its totient is φ = 66020325504.

The previous prime is 165050813747. The next prime is 165050813827. The reversal of 165050813770 is 77318050561.

It can be written as a sum of positive squares in 2 ways, for example, as 159482818609 + 5567995161 = 399353^2 + 74619^2 .

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

It is a super-2 number, since 2×165050813770² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8252540679 + ... + 8252540698.

Almost surely, 2^165050813770 is an apocalyptic number.

165050813770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165050813770 is a deficient number, since it is larger than the sum of its proper divisors (132040651034).

165050813770 is a wasteful number, since it uses less digits than its factorization.

165050813770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16505081384.

The product of its (nonzero) digits is 176400, while the sum is 43.

The spelling of 165050813770 in words is "one hundred sixty-five billion, fifty million, eight hundred thirteen thousand, seven hundred seventy".