165969684924357 has 4 divisors (see below), whose sum is σ = 221292913232480. Its totient is φ = 110646456616236.

The previous prime is 165969684924347. The next prime is 165969684924359. The reversal of 165969684924357 is 753429486969561.

165969684924357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 165969684924357 - 2⁶ = 165969684924293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165969684924357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165969684924359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27661614154057 + ... + 27661614154062.

It is an arithmetic number, because the mean of its divisors is an integer number (55323228308120).

Almost surely, 2^{165969684924357} is an apocalyptic number.

It is an amenable number.

165969684924357 is a deficient number, since it is larger than the sum of its proper divisors (55323228308123).

165969684924357 is an equidigital number, since it uses as much as digits as its factorization.

165969684924357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55323228308122.

The product of its digits is 21163161600, while the sum is 84.

The spelling of 165969684924357 in words is "one hundred sixty-five trillion, nine hundred sixty-nine billion, six hundred eighty-four million, nine hundred twenty-four thousand, three hundred fifty-seven".