238775252555 has 16 divisors (see below), whose sum is σ = 327536987904. Its totient is φ = 163694709600.

The previous prime is 238775252543. The next prime is 238775252557. The reversal of 238775252555 is 555252577832.

It is not a de Polignac number, because 238775252555 - 2²⁶ = 238708143691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238775252555.

It is not an unprimeable number, because it can be changed into a prime (238775252557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 610577 + ... + 922146.

It is an arithmetic number, because the mean of its divisors is an integer number (20471061744).

Almost surely, 2^238775252555 is an apocalyptic number.

238775252555 is a deficient number, since it is larger than the sum of its proper divisors (88761735349).

238775252555 is a wasteful number, since it uses less digits than its factorization.

238775252555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537186.

The product of its digits is 29400000, while the sum is 56.

The spelling of 238775252555 in words is "two hundred thirty-eight billion, seven hundred seventy-five million, two hundred fifty-two thousand, five hundred fifty-five".