154138887875 has 32 divisors (see below), whose sum is σ = 219957608832. Its totient is φ = 105641625600.

The previous prime is 154138887853. The next prime is 154138887901. The reversal of 154138887875 is 578788831451.

154138887875 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 154138887875 - 2⁸ = 154138887619 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1721207 + ... + 1808543.

It is an arithmetic number, because the mean of its divisors is an integer number (6873675276).

Almost surely, 2^154138887875 is an apocalyptic number.

154138887875 is a deficient number, since it is larger than the sum of its proper divisors (65818720957).

154138887875 is an equidigital number, since it uses as much as digits as its factorization.

154138887875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89376 (or 89366 counting only the distinct ones).

The product of its digits is 60211200, while the sum is 65.

The spelling of 154138887875 in words is "one hundred fifty-four billion, one hundred thirty-eight million, eight hundred eighty-seven thousand, eight hundred seventy-five".