54240109491 has 8 divisors (see below), whose sum is σ = 73399551424. Its totient is φ = 35620370280.

The previous prime is 54240109489. The next prime is 54240109523. The reversal of 54240109491 is 19490104245.

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

It is not a de Polignac number, because 54240109491 - 2¹ = 54240109489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54240109591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134925445 + ... + 134925846.

It is an arithmetic number, because the mean of its divisors is an integer number (9174943928).

Almost surely, 2^54240109491 is an apocalyptic number.

54240109491 is a deficient number, since it is larger than the sum of its proper divisors (19159441933).

54240109491 is a wasteful number, since it uses less digits than its factorization.

54240109491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269851361.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 54240109491 in words is "fifty-four billion, two hundred forty million, one hundred nine thousand, four hundred ninety-one".