238700867721867 has 48 divisors (see below), whose sum is σ = 371062943121312. Its totient is φ = 147315318543360.

The previous prime is 238700867721863. The next prime is 238700867721907. The reversal of 238700867721867 is 768127768007832.

It is a happy number.

238700867721867 is a `hidden beast` number, since 2 + 387 + 0 + 0 + 8 + 67 + 7 + 2 + 186 + 7 = 666.

It is not a de Polignac number, because 238700867721867 - 2² = 238700867721863 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 238700867721795 and 238700867721804.

It is not an unprimeable number, because it can be changed into a prime (238700867721863) 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 47 ways as a sum of consecutive naturals, for example, 664675408 + ... + 665034434.

It is an arithmetic number, because the mean of its divisors is an integer number (7730477981694).

Almost surely, 2^{238700867721867} is an apocalyptic number.

238700867721867 is a deficient number, since it is larger than the sum of its proper divisors (132362075399445).

238700867721867 is a wasteful number, since it uses less digits than its factorization.

238700867721867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430348 (or 430345 counting only the distinct ones).

The product of its (nonzero) digits is 531062784, while the sum is 72.

The spelling of 238700867721867 in words is "two hundred thirty-eight trillion, seven hundred billion, eight hundred sixty-seven million, seven hundred twenty-one thousand, eight hundred sixty-seven".