165719493632 has 264 divisors, whose sum is σ = 419144571552. Its totient is φ = 64102072320.

The previous prime is 165719493523. The next prime is 165719493661. The reversal of 165719493632 is 236394917561.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136169888 + ... + 136171104.

Almost surely, 2^165719493632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165719493632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209572285776).

165719493632 is an abundant number, since it is smaller than the sum of its proper divisors (253425077920).

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

165719493632 is a wasteful number, since it uses less digits than its factorization.

165719493632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1423 (or 1394 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 56.

The spelling of 165719493632 in words is "one hundred sixty-five billion, seven hundred nineteen million, four hundred ninety-three thousand, six hundred thirty-two".