401664727703 has 2 divisors, whose sum is σ = 401664727704. Its totient is φ = 401664727702.

The previous prime is 401664727693. The next prime is 401664727811. The reversal of 401664727703 is 307727466104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401664727703 - 2¹⁰ = 401664726679 is a prime.

It is a super-2 number, since 2×401664727703² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401664720703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200832363851 + 200832363852.

It is an arithmetic number, because the mean of its divisors is an integer number (200832363852).

Almost surely, 2^401664727703 is an apocalyptic number.

401664727703 is a deficient number, since it is larger than the sum of its proper divisors (1).

401664727703 is an equidigital number, since it uses as much as digits as its factorization.

401664727703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1185408, while the sum is 47.

The spelling of 401664727703 in words is "four hundred one billion, six hundred sixty-four million, seven hundred twenty-seven thousand, seven hundred three".