238199572987 has 16 divisors (see below), whose sum is σ = 244489881600. Its totient is φ = 231961844800.

The previous prime is 238199572967. The next prime is 238199573023. The reversal of 238199572987 is 789275991832.

It is a de Polignac number, because none of the positive numbers 2^k-238199572987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238199572907) 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, 14471112 + ... + 14487562.

It is an arithmetic number, because the mean of its divisors is an integer number (15280617600).

Almost surely, 2^238199572987 is an apocalyptic number.

238199572987 is a deficient number, since it is larger than the sum of its proper divisors (6290308613).

238199572987 is a wasteful number, since it uses less digits than its factorization.

238199572987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18026.

The product of its digits is 137168640, while the sum is 70.

The spelling of 238199572987 in words is "two hundred thirty-eight billion, one hundred ninety-nine million, five hundred seventy-two thousand, nine hundred eighty-seven".