54138339731 has 8 divisors (see below), whose sum is σ = 62324012640. Its totient is φ = 46065572928.

The previous prime is 54138339721. The next prime is 54138339733. The reversal of 54138339731 is 13793383145.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 54138339731 - 2²⁶ = 54071230867 is a prime.

It is a super-2 number, since 2×54138339731² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54138339733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28225496 + ... + 28227413.

It is an arithmetic number, because the mean of its divisors is an integer number (7790501580).

Almost surely, 2^54138339731 is an apocalyptic number.

54138339731 is a deficient number, since it is larger than the sum of its proper divisors (8185672909).

54138339731 is a wasteful number, since it uses less digits than its factorization.

54138339731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56453053.

The product of its digits is 816480, while the sum is 47.

The spelling of 54138339731 in words is "fifty-four billion, one hundred thirty-eight million, three hundred thirty-nine thousand, seven hundred thirty-one".