2138558017358 has 64 divisors (see below), whose sum is σ = 3777745789440. Its totient is φ = 888782792832.

The previous prime is 2138558017339. The next prime is 2138558017369. The reversal of 2138558017358 is 8537108558312.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263267885 + ... + 263276007.

It is an arithmetic number, because the mean of its divisors is an integer number (59027277960).

Almost surely, 2^{2138558017358} is an apocalyptic number.

2138558017358 is a deficient number, since it is larger than the sum of its proper divisors (1639187772082).

2138558017358 is a wasteful number, since it uses less digits than its factorization.

2138558017358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9801.

The product of its (nonzero) digits is 8064000, while the sum is 56.

The spelling of 2138558017358 in words is "two trillion, one hundred thirty-eight billion, five hundred fifty-eight million, seventeen thousand, three hundred fifty-eight".