167028804421 has 4 divisors (see below), whose sum is σ = 167030287200. Its totient is φ = 167027321644.

The previous prime is 167028804409. The next prime is 167028804427. The reversal of 167028804421 is 124408820761.

167028804421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 167028804421 - 2¹⁷ = 167028673349 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 (167028804427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 557161 + ... + 802798.

It is an arithmetic number, because the mean of its divisors is an integer number (41757571800).

Almost surely, 2^167028804421 is an apocalyptic number.

It is an amenable number.

167028804421 is a deficient number, since it is larger than the sum of its proper divisors (1482779).

167028804421 is a wasteful number, since it uses less digits than its factorization.

167028804421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482778.

The product of its (nonzero) digits is 172032, while the sum is 43.

The spelling of 167028804421 in words is "one hundred sixty-seven billion, twenty-eight million, eight hundred four thousand, four hundred twenty-one".