238037385243861 has 48 divisors (see below), whose sum is σ = 397014584264064. Its totient is φ = 134617110579072.

The previous prime is 238037385243859. The next prime is 238037385243953. The reversal of 238037385243861 is 168342583730832.

238037385243861 is a `hidden beast` number, since 2 + 3 + 8 + 0 + 3 + 7 + 385 + 243 + 8 + 6 + 1 = 666.

It is not a de Polignac number, because 238037385243861 - 2¹ = 238037385243859 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238037385243841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10600726 + ... + 24257991.

It is an arithmetic number, because the mean of its divisors is an integer number (8271137172168).

Almost surely, 2^{238037385243861} is an apocalyptic number.

238037385243861 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

238037385243861 is a deficient number, since it is larger than the sum of its proper divisors (158977199020203).

238037385243861 is a wasteful number, since it uses less digits than its factorization.

238037385243861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34859850 (or 34859847 counting only the distinct ones).

The product of its (nonzero) digits is 139345920, while the sum is 63.

The spelling of 238037385243861 in words is "two hundred thirty-eight trillion, thirty-seven billion, three hundred eighty-five million, two hundred forty-three thousand, eight hundred sixty-one".