665872162111050 has 48 divisors (see below), whose sum is σ = 1666513080994080. Its totient is φ = 175936864847040.

The previous prime is 665872162111043. The next prime is 665872162111099. The reversal of 665872162111050 is 50111261278566.

It is a junction number, because it is equal to n+sod(n) for n = 665872162110984 and 665872162111002.

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, 20363046712 + ... + 20363079411.

It is an arithmetic number, because the mean of its divisors is an integer number (34719022520710).

Almost surely, 2^{665872162111050} is an apocalyptic number.

665872162111050 is an abundant number, since it is smaller than the sum of its proper divisors (1000640918883030).

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

665872162111050 is a wasteful number, since it uses less digits than its factorization.

665872162111050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40726126247 (or 40726126242 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 51.

The spelling of 665872162111050 in words is "six hundred sixty-five trillion, eight hundred seventy-two billion, one hundred sixty-two million, one hundred eleven thousand, fifty".