164121922829 has 4 divisors (see below), whose sum is σ = 167938711776. Its totient is φ = 160305133884.

The previous prime is 164121922823. The next prime is 164121922831. The reversal of 164121922829 is 928229121461.

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 164121922829 - 2⁴ = 164121922813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164121922823) 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, 1908394409 + ... + 1908394494.

It is an arithmetic number, because the mean of its divisors is an integer number (41984677944).

Almost surely, 2^164121922829 is an apocalyptic number.

It is an amenable number.

164121922829 is a deficient number, since it is larger than the sum of its proper divisors (3816788947).

164121922829 is an equidigital number, since it uses as much as digits as its factorization.

164121922829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3816788946.

The product of its digits is 248832, while the sum is 47.

The spelling of 164121922829 in words is "one hundred sixty-four billion, one hundred twenty-one million, nine hundred twenty-two thousand, eight hundred twenty-nine".