238618228078587 has 16 divisors (see below), whose sum is σ = 363906037393920. Its totient is φ = 136241782352832.

The previous prime is 238618228078501. The next prime is 238618228078589. The reversal of 238618228078587 is 785870822816832.

It is not a de Polignac number, because 238618228078587 - 2⁷ = 238618228078459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (238618228078589) 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, 4645425162 + ... + 4645476527.

It is an arithmetic number, because the mean of its divisors is an integer number (22744127337120).

Almost surely, 2^{238618228078587} is an apocalyptic number.

238618228078587 is a deficient number, since it is larger than the sum of its proper divisors (125287809315333).

238618228078587 is a wasteful number, since it uses less digits than its factorization.

238618228078587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9290902922.

The product of its (nonzero) digits is 1156055040, while the sum is 75.

The spelling of 238618228078587 in words is "two hundred thirty-eight trillion, six hundred eighteen billion, two hundred twenty-eight million, seventy-eight thousand, five hundred eighty-seven".