165490272612 has 192 divisors, whose sum is σ = 538591334400. Its totient is φ = 42846693120.

The previous prime is 165490272601. The next prime is 165490272637. The reversal of 165490272612 is 216272094561.

165490272612 is a `hidden beast` number, since 1 + 6 + 5 + 4 + 9 + 0 + 27 + 2 + 612 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 79912 + ... + 580832.

It is an arithmetic number, because the mean of its divisors is an integer number (2805163200).

Almost surely, 2^165490272612 is an apocalyptic number.

165490272612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165490272612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269295667200).

165490272612 is an abundant number, since it is smaller than the sum of its proper divisors (373101061788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165490272612 is a wasteful number, since it uses less digits than its factorization.

165490272612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500983 (or 500975 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 165490272612 in words is "one hundred sixty-five billion, four hundred ninety million, two hundred seventy-two thousand, six hundred twelve".