238105663646 has 32 divisors (see below), whose sum is σ = 378184396800. Its totient is φ = 112119927840.

The previous prime is 238105663573. The next prime is 238105663681. The reversal of 238105663646 is 646366501832.

It is a junction number, because it is equal to n+sod(n) for n = 238105663594 and 238105663603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5988251 + ... + 6027881.

It is an arithmetic number, because the mean of its divisors is an integer number (11818262400).

Almost surely, 2^238105663646 is an apocalyptic number.

238105663646 is a deficient number, since it is larger than the sum of its proper divisors (140078733154).

238105663646 is a wasteful number, since it uses less digits than its factorization.

238105663646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40584.

The product of its (nonzero) digits is 3732480, while the sum is 50.

The spelling of 238105663646 in words is "two hundred thirty-eight billion, one hundred five million, six hundred sixty-three thousand, six hundred forty-six".