54040138905 has 16 divisors (see below), whose sum is σ = 86468241600. Its totient is φ = 28820067648.

The previous prime is 54040138861. The next prime is 54040138909. The reversal of 54040138905 is 50983104045.

It is not a de Polignac number, because 54040138905 - 2⁷ = 54040138777 is a prime.

It is a super-2 number, since 2×54040138905² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (54040138909) 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, 309174 + ... + 451296.

It is an arithmetic number, because the mean of its divisors is an integer number (5404265100).

Almost surely, 2^54040138905 is an apocalyptic number.

It is an amenable number.

54040138905 is a deficient number, since it is larger than the sum of its proper divisors (32428102695).

54040138905 is a wasteful number, since it uses less digits than its factorization.

54040138905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167480.

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 54040138905 in words is "fifty-four billion, forty million, one hundred thirty-eight thousand, nine hundred five".