165354900481 has 4 divisors (see below), whose sum is σ = 174057790000. Its totient is φ = 156652010964.

The previous prime is 165354900419. The next prime is 165354900497. The reversal of 165354900481 is 184009453561.

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 a cyclic number.

It is not a de Polignac number, because 165354900481 - 2⁷ = 165354900353 is a prime.

It is a super-2 number, since 2×165354900481² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165354900401) 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, 4351444731 + ... + 4351444768.

It is an arithmetic number, because the mean of its divisors is an integer number (43514447500).

Almost surely, 2^165354900481 is an apocalyptic number.

It is an amenable number.

165354900481 is a deficient number, since it is larger than the sum of its proper divisors (8702889519).

165354900481 is an equidigital number, since it uses as much as digits as its factorization.

165354900481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8702889518.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 165354900481 in words is "one hundred sixty-five billion, three hundred fifty-four million, nine hundred thousand, four hundred eighty-one".