401663362103536 has 20 divisors (see below), whose sum is σ = 838086053620312. Its totient is φ = 185383090201536.

The previous prime is 401663362103533. The next prime is 401663362103537. The reversal of 401663362103536 is 635301263366104.

It is a super-2 number, since 2×401663362103536² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401663362103536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401663362103533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965536927926 + ... + 965536928341.

Almost surely, 2^{401663362103536} is an apocalyptic number.

It is an amenable number.

401663362103536 is an abundant number, since it is smaller than the sum of its proper divisors (436422691516776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

401663362103536 is a wasteful number, since it uses less digits than its factorization.

401663362103536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1931073856288 (or 1931073856282 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 49.

The spelling of 401663362103536 in words is "four hundred one trillion, six hundred sixty-three billion, three hundred sixty-two million, one hundred three thousand, five hundred thirty-six".