165444953310 has 384 divisors, whose sum is σ = 555450255360. Its totient is φ = 33225292800.

The previous prime is 165444953257. The next prime is 165444953321. The reversal of 165444953310 is 13359444561.

165444953310 is a `hidden beast` number, since 1 + 6 + 544 + 4 + 95 + 3 + 3 + 10 = 666.

It is a super-2 number, since 2×165444953310² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 16858305 + ... + 16868115.

It is an arithmetic number, because the mean of its divisors is an integer number (1446485040).

Almost surely, 2^165444953310 is an apocalyptic number.

165444953310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 165444953310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277725127680).

165444953310 is an abundant number, since it is smaller than the sum of its proper divisors (390005302050).

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

165444953310 is a wasteful number, since it uses less digits than its factorization.

165444953310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9944 (or 9941 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 165444953310 in words is "one hundred sixty-five billion, four hundred forty-four million, nine hundred fifty-three thousand, three hundred ten".