164203470251 has 4 divisors (see below), whose sum is σ = 164207115792. Its totient is φ = 164199824712.

The previous prime is 164203470227. The next prime is 164203470269. The reversal of 164203470251 is 152074302461.

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 164203470251 - 2¹⁴ = 164203453867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164203170251) 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, 1754351 + ... + 1845576.

It is an arithmetic number, because the mean of its divisors is an integer number (41051778948).

Almost surely, 2^164203470251 is an apocalyptic number.

164203470251 is a deficient number, since it is larger than the sum of its proper divisors (3645541).

164203470251 is an equidigital number, since it uses as much as digits as its factorization.

164203470251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3645540.

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 164203470251 in words is "one hundred sixty-four billion, two hundred three million, four hundred seventy thousand, two hundred fifty-one".