238898261018064 has 80 divisors (see below), whose sum is σ = 631595201605632. Its totient is φ = 77769873976704.

The previous prime is 238898261018063. The next prime is 238898261018069. The reversal of 238898261018064 is 460810162898832.

It is a junction number, because it is equal to n+sod(n) for n = 238898261017986 and 238898261018004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238898261018063) 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, 6512959 + ... + 22808225.

Almost surely, 2^{238898261018064} is an apocalyptic number.

238898261018064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

238898261018064 is an abundant number, since it is smaller than the sum of its proper divisors (392696940587568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

238898261018064 is a wasteful number, since it uses less digits than its factorization.

238898261018064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16302424 (or 16302418 counting only the distinct ones).

The product of its (nonzero) digits is 63700992, while the sum is 66.

The spelling of 238898261018064 in words is "two hundred thirty-eight trillion, eight hundred ninety-eight billion, two hundred sixty-one million, eighteen thousand, sixty-four".