164361200020631 has 4 divisors (see below), whose sum is σ = 164638368992592. Its totient is φ = 164084031048672.

The previous prime is 164361200020627. The next prime is 164361200020733. The reversal of 164361200020631 is 136020002163461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164361200020631 - 2² = 164361200020627 is a prime.

It is a super-2 number, since 2×164361200020631² (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 = 164361200020591 and 164361200020600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164361200022631) 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, 138584485091 + ... + 138584486276.

It is an arithmetic number, because the mean of its divisors is an integer number (41159592248148).

Almost surely, 2^{164361200020631} is an apocalyptic number.

164361200020631 is a deficient number, since it is larger than the sum of its proper divisors (277168971961).

164361200020631 is an equidigital number, since it uses as much as digits as its factorization.

164361200020631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277168971960.

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 164361200020631 in words is "one hundred sixty-four trillion, three hundred sixty-one billion, two hundred million, twenty thousand, six hundred thirty-one".