165430133451 has 48 divisors (see below), whose sum is σ = 274644240000. Its totient is φ = 94898459520.

The previous prime is 165430133437. The next prime is 165430133459. The reversal of 165430133451 is 154331034561.

165430133451 is a `hidden beast` number, since 1 + 6 + 5 + 4 + 301 + 3 + 345 + 1 = 666.

It is not a de Polignac number, because 165430133451 - 2¹⁵ = 165430100683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (165430133459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2084700 + ... + 2162598.

It is an arithmetic number, because the mean of its divisors is an integer number (5721755000).

Almost surely, 2^165430133451 is an apocalyptic number.

165430133451 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

165430133451 is a deficient number, since it is larger than the sum of its proper divisors (109214106549).

165430133451 is a wasteful number, since it uses less digits than its factorization.

165430133451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79064 (or 79061 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 165430133451 in words is "one hundred sixty-five billion, four hundred thirty million, one hundred thirty-three thousand, four hundred fifty-one".