54181390138 has 16 divisors (see below), whose sum is σ = 81912416256. Its totient is φ = 26877352320.

The previous prime is 54181390129. The next prime is 54181390213. The reversal of 54181390138 is 83109318145.

It is a junction number, because it is equal to n+sod(n) for n = 54181390094 and 54181390103.

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, 1159495 + ... + 1205317.

It is an arithmetic number, because the mean of its divisors is an integer number (5119526016).

Almost surely, 2^54181390138 is an apocalyptic number.

54181390138 is a deficient number, since it is larger than the sum of its proper divisors (27731026118).

54181390138 is a wasteful number, since it uses less digits than its factorization.

54181390138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50469.

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 54181390138 in words is "fifty-four billion, one hundred eighty-one million, three hundred ninety thousand, one hundred thirty-eight".