164043123451 has 8 divisors (see below), whose sum is σ = 165181896608. Its totient is φ = 162905040000.

The previous prime is 164043123443. The next prime is 164043123473. The reversal of 164043123451 is 154321340461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164043123451 - 2³ = 164043123443 is a prime.

It is a super-2 number, since 2×164043123451² (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 (164043126451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309571 + ... + 651091.

It is an arithmetic number, because the mean of its divisors is an integer number (20647737076).

Almost surely, 2^164043123451 is an apocalyptic number.

164043123451 is a deficient number, since it is larger than the sum of its proper divisors (1138773157).

164043123451 is a wasteful number, since it uses less digits than its factorization.

164043123451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344853.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 164043123451 in words is "one hundred sixty-four billion, forty-three million, one hundred twenty-three thousand, four hundred fifty-one".