138850590854 has 4 divisors (see below), whose sum is σ = 208275886284. Its totient is φ = 69425295426.

The previous prime is 138850590841. The next prime is 138850590863. The reversal of 138850590854 is 458095058831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 458095058831 = 29 ⋅15796381339.

It is a self number, because there is not a number n which added to its sum of digits gives 138850590854.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34712647712 + ... + 34712647715.

It is an arithmetic number, because the mean of its divisors is an integer number (52068971571).

Almost surely, 2^138850590854 is an apocalyptic number.

138850590854 is a deficient number, since it is larger than the sum of its proper divisors (69425295430).

138850590854 is an equidigital number, since it uses as much as digits as its factorization.

138850590854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69425295429.

The product of its (nonzero) digits is 6912000, while the sum is 56.

The spelling of 138850590854 in words is "one hundred thirty-eight billion, eight hundred fifty million, five hundred ninety thousand, eight hundred fifty-four".