54115405981 has 32 divisors (see below), whose sum is σ = 67528294400. Its totient is φ = 42223446720.

The previous prime is 54115405957. The next prime is 54115406011. The reversal of 54115405981 is 18950451145.

It is not a de Polignac number, because 54115405981 - 2⁷ = 54115405853 is a prime.

It is a super-2 number, since 2×54115405981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54115405081) 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 31 ways as a sum of consecutive naturals, for example, 6602596 + ... + 6610786.

It is an arithmetic number, because the mean of its divisors is an integer number (2110259200).

Almost surely, 2^54115405981 is an apocalyptic number.

It is an amenable number.

54115405981 is a deficient number, since it is larger than the sum of its proper divisors (13412888419).

54115405981 is a wasteful number, since it uses less digits than its factorization.

54115405981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9209.

The product of its (nonzero) digits is 144000, while the sum is 43.

The spelling of 54115405981 in words is "fifty-four billion, one hundred fifteen million, four hundred five thousand, nine hundred eighty-one".