229908172646 has 16 divisors (see below), whose sum is σ = 364669458048. Its totient is φ = 108532574400.

The previous prime is 229908172633. The next prime is 229908172673. The reversal of 229908172646 is 646271809922.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 229908172591 and 229908172600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45219365 + ... + 45224448.

It is an arithmetic number, because the mean of its divisors is an integer number (22791841128).

Almost surely, 2^229908172646 is an apocalyptic number.

229908172646 is a deficient number, since it is larger than the sum of its proper divisors (134761285402).

229908172646 is a wasteful number, since it uses less digits than its factorization.

229908172646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90443887.

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 229908172646 in words is "two hundred twenty-nine billion, nine hundred eight million, one hundred seventy-two thousand, six hundred forty-six".