54861434479 has 4 divisors (see below), whose sum is σ = 54867765784. Its totient is φ = 54855103176.

The previous prime is 54861434471. The next prime is 54861434491. The reversal of 54861434479 is 97443416845.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97443416845 = 5 ⋅19488683369.

It is a cyclic number.

It is not a de Polignac number, because 54861434479 - 2³ = 54861434471 is a prime.

It is a super-2 number, since 2×54861434479² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54861434471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3152637 + ... + 3169990.

It is an arithmetic number, because the mean of its divisors is an integer number (13716941446).

Almost surely, 2^54861434479 is an apocalyptic number.

54861434479 is a deficient number, since it is larger than the sum of its proper divisors (6331305).

54861434479 is an equidigital number, since it uses as much as digits as its factorization.

54861434479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6331304.

The product of its digits is 11612160, while the sum is 55.

The spelling of 54861434479 in words is "fifty-four billion, eight hundred sixty-one million, four hundred thirty-four thousand, four hundred seventy-nine".