54186438459 has 16 divisors (see below), whose sum is σ = 72449748000. Its totient is φ = 36023801856.

The previous prime is 54186438451. The next prime is 54186438479. The reversal of 54186438459 is 95483468145.

It is not a de Polignac number, because 54186438459 - 2³ = 54186438451 is a prime.

It is a super-2 number, since 2×54186438459² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54186438399 and 54186438408.

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 15 ways as a sum of consecutive naturals, for example, 2647437 + ... + 2667825.

It is an arithmetic number, because the mean of its divisors is an integer number (4528109250).

Almost surely, 2^54186438459 is an apocalyptic number.

54186438459 is a deficient number, since it is larger than the sum of its proper divisors (18263309541).

54186438459 is a wasteful number, since it uses less digits than its factorization.

54186438459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22814.

The product of its digits is 16588800, while the sum is 57.

The spelling of 54186438459 in words is "fifty-four billion, one hundred eighty-six million, four hundred thirty-eight thousand, four hundred fifty-nine".