238359907557 has 24 divisors (see below), whose sum is σ = 344767399704. Its totient is φ = 158689949184.

The previous prime is 238359907537. The next prime is 238359907613. The reversal of 238359907557 is 755709953832.

238359907557 is a `hidden beast` number, since 2 + 38 + 3 + 599 + 0 + 7 + 5 + 5 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 14825741121 + 223534166436 = 121761^2 + 472794^2 .

It is not a de Polignac number, because 238359907557 - 2¹⁸ = 238359645413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 238359907494 and 238359907503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238359907517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25689003 + ... + 25698279.

It is an arithmetic number, because the mean of its divisors is an integer number (14365308321).

Almost surely, 2^238359907557 is an apocalyptic number.

It is an amenable number.

238359907557 is a deficient number, since it is larger than the sum of its proper divisors (106407492147).

238359907557 is a wasteful number, since it uses less digits than its factorization.

238359907557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12869 (or 12866 counting only the distinct ones).

The product of its (nonzero) digits is 71442000, while the sum is 63.

The spelling of 238359907557 in words is "two hundred thirty-eight billion, three hundred fifty-nine million, nine hundred seven thousand, five hundred fifty-seven".