16165161770 has 8 divisors (see below), whose sum is σ = 29097291204. Its totient is φ = 6466064704.

The previous prime is 16165161767. The next prime is 16165161821. The reversal of 16165161770 is 7716156161.

It can be written as a sum of positive squares in 2 ways, for example, as 16098788161 + 66373609 = 126881^2 + 8147^2 .

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

It is a super-2 number, since 2×16165161770² (a number of 21 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, 808258079 + ... + 808258098.

Almost surely, 2^16165161770 is an apocalyptic number.

16165161770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16165161770 is a deficient number, since it is larger than the sum of its proper divisors (12932129434).

16165161770 is a wasteful number, since it uses less digits than its factorization.

16165161770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616516184.

The product of its (nonzero) digits is 52920, while the sum is 41.

The spelling of 16165161770 in words is "sixteen billion, one hundred sixty-five million, one hundred sixty-one thousand, seven hundred seventy".