401688005229 has 16 divisors (see below), whose sum is σ = 680106675840. Its totient is φ = 229536002880.

The previous prime is 401688005219. The next prime is 401688005273. The reversal of 401688005229 is 922500886104.

401688005229 is a `hidden beast` number, since 40 + 1 + 6 + 8 + 80 + 0 + 522 + 9 = 666.

It is not a de Polignac number, because 401688005229 - 2¹¹ = 401688003181 is a prime.

It is a super-2 number, since 2×401688005229² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401688005219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1062666492 + ... + 1062666869.

It is an arithmetic number, because the mean of its divisors is an integer number (42506667240).

Almost surely, 2^401688005229 is an apocalyptic number.

It is an amenable number.

401688005229 is a deficient number, since it is larger than the sum of its proper divisors (278418670611).

401688005229 is a wasteful number, since it uses less digits than its factorization.

401688005229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125333377 (or 2125333371 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 401688005229 in words is "four hundred one billion, six hundred eighty-eight million, five thousand, two hundred twenty-nine".