165556655660 has 24 divisors (see below), whose sum is σ = 379275248016. Its totient is φ = 60202420160.

The previous prime is 165556655653. The next prime is 165556655681. The reversal of 165556655660 is 66556655561.

It is a junction number, because it is equal to n+sod(n) for n = 165556655596 and 165556655605.

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, 376264907 + ... + 376265346.

It is an arithmetic number, because the mean of its divisors is an integer number (15803135334).

Almost surely, 2^165556655660 is an apocalyptic number.

165556655660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165556655660 is an abundant number, since it is smaller than the sum of its proper divisors (213718592356).

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

165556655660 is a wasteful number, since it uses less digits than its factorization.

165556655660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752530273 (or 752530271 counting only the distinct ones).

The product of its (nonzero) digits is 24300000, while the sum is 56.

Subtracting from 165556655660 its reverse (66556655561), we obtain a palindrome (99000000099).

The spelling of 165556655660 in words is "one hundred sixty-five billion, five hundred fifty-six million, six hundred fifty-five thousand, six hundred sixty".