138793728854 has 16 divisors (see below), whose sum is σ = 227134708416. Its totient is φ = 63083142600.

The previous prime is 138793728841. The next prime is 138793728863. The reversal of 138793728854 is 458827397831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50909 + ... + 529319.

It is an arithmetic number, because the mean of its divisors is an integer number (14195919276).

Almost surely, 2^138793728854 is an apocalyptic number.

138793728854 is a deficient number, since it is larger than the sum of its proper divisors (88340979562).

138793728854 is a wasteful number, since it uses less digits than its factorization.

138793728854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491611.

The product of its digits is 81285120, while the sum is 65.

The spelling of 138793728854 in words is "one hundred thirty-eight billion, seven hundred ninety-three million, seven hundred twenty-eight thousand, eight hundred fifty-four".