165404445010 has 32 divisors (see below), whose sum is σ = 340508593152. Its totient is φ = 56668758720.

The previous prime is 165404444951. The next prime is 165404445013. The reversal of 165404445010 is 10544404561.

It is a super-2 number, since 2×165404445010² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (165404445013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 764386 + ... + 956605.

It is an arithmetic number, because the mean of its divisors is an integer number (10640893536).

Almost surely, 2^165404445010 is an apocalyptic number.

165404445010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165404445010 is an abundant number, since it is smaller than the sum of its proper divisors (175104148142).

165404445010 is a wasteful number, since it uses less digits than its factorization.

165404445010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1722378.

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 165404445010 its reverse (10544404561), we get a palindrome (175948849571).

The spelling of 165404445010 in words is "one hundred sixty-five billion, four hundred four million, four hundred forty-five thousand, ten".