54186438458 has 16 divisors (see below), whose sum is σ = 81662405280. Its totient is φ = 26965717776.

The previous prime is 54186438451. The next prime is 54186438479. The reversal of 54186438458 is 85483468145.

It is a super-2 number, since 2×54186438458² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (54186438451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1441085 + ... + 1478207.

It is an arithmetic number, because the mean of its divisors is an integer number (5103900330).

Almost surely, 2^54186438458 is an apocalyptic number.

54186438458 is a deficient number, since it is larger than the sum of its proper divisors (27475966822).

54186438458 is a wasteful number, since it uses less digits than its factorization.

54186438458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40541.

The product of its digits is 14745600, while the sum is 56.

The spelling of 54186438458 in words is "fifty-four billion, one hundred eighty-six million, four hundred thirty-eight thousand, four hundred fifty-eight".