164351242451543 has 24 divisors (see below), whose sum is σ = 197778849810480. Its totient is φ = 136013310881280.

The previous prime is 164351242451503. The next prime is 164351242451563. The reversal of 164351242451543 is 345154242153461.

164351242451543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 164351242451543 - 2⁴⁶ = 93982498273879 is a prime.

It is a super-2 number, since 2×164351242451543² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164351242451491 and 164351242451500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164351242451503) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137870180 + ... + 139057142.

It is an arithmetic number, because the mean of its divisors is an integer number (8240785408770).

Almost surely, 2^{164351242451543} is an apocalyptic number.

164351242451543 is a deficient number, since it is larger than the sum of its proper divisors (33427607358937).

164351242451543 is a wasteful number, since it uses less digits than its factorization.

164351242451543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284447 (or 1284440 counting only the distinct ones).

The product of its digits is 6912000, while the sum is 50.

The spelling of 164351242451543 in words is "one hundred sixty-four trillion, three hundred fifty-one billion, two hundred forty-two million, four hundred fifty-one thousand, five hundred forty-three".