165454728944 has 40 divisors (see below), whose sum is σ = 321308966160. Its totient is φ = 82536447488.

The previous prime is 165454728931. The next prime is 165454728977. The reversal of 165454728944 is 449827454561.

It is a super-2 number, since 2×165454728944² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24317447 + ... + 24324249.

It is an arithmetic number, because the mean of its divisors is an integer number (8032724154).

Almost surely, 2^165454728944 is an apocalyptic number.

It is an amenable number.

165454728944 is a deficient number, since it is larger than the sum of its proper divisors (155854237216).

165454728944 is a wasteful number, since it uses less digits than its factorization.

165454728944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10097 (or 10091 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 59.

The spelling of 165454728944 in words is "one hundred sixty-five billion, four hundred fifty-four million, seven hundred twenty-eight thousand, nine hundred forty-four".