54138504257123 has 16 divisors (see below), whose sum is σ = 65654996370432. Its totient is φ = 43965399348000.

The previous prime is 54138504257113. The next prime is 54138504257129. The reversal of 54138504257123 is 32175240583145.

It is not a de Polignac number, because 54138504257123 - 2¹² = 54138504253027 is a prime.

It is a super-5 number, since 5×54138504257123⁵ (a number of 70 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54138504257129) 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, 6106301033 + ... + 6106309898.

It is an arithmetic number, because the mean of its divisors is an integer number (4103437273152).

Almost surely, 2^{54138504257123} is an apocalyptic number.

54138504257123 is a deficient number, since it is larger than the sum of its proper divisors (11516492113309).

54138504257123 is a wasteful number, since it uses less digits than its factorization.

54138504257123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12212610986.

The product of its (nonzero) digits is 4032000, while the sum is 50.

The spelling of 54138504257123 in words is "fifty-four trillion, one hundred thirty-eight billion, five hundred four million, two hundred fifty-seven thousand, one hundred twenty-three".