164635570403 has 2 divisors, whose sum is σ = 164635570404. Its totient is φ = 164635570402.

The previous prime is 164635570339. The next prime is 164635570493. The reversal of 164635570403 is 304075536461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164635570403 - 2⁶ = 164635570339 is a prime.

It is not a weakly prime, because it can be changed into another prime (164635570493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82317785201 + 82317785202.

It is an arithmetic number, because the mean of its divisors is an integer number (82317785202).

Almost surely, 2^164635570403 is an apocalyptic number.

164635570403 is a deficient number, since it is larger than the sum of its proper divisors (1).

164635570403 is an equidigital number, since it uses as much as digits as its factorization.

164635570403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 44.

The spelling of 164635570403 in words is "one hundred sixty-four billion, six hundred thirty-five million, five hundred seventy thousand, four hundred three".