54126513989 has 4 divisors (see below), whose sum is σ = 54458578656. Its totient is φ = 53794449324.

The previous prime is 54126513971. The next prime is 54126514019. The reversal of 54126513989 is 98931562145.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54126513989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 54126513989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54126513689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166032089 + ... + 166032414.

It is an arithmetic number, because the mean of its divisors is an integer number (13614644664).

Almost surely, 2^54126513989 is an apocalyptic number.

It is an amenable number.

54126513989 is a deficient number, since it is larger than the sum of its proper divisors (332064667).

54126513989 is a wasteful number, since it uses less digits than its factorization.

54126513989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332064666.

The product of its digits is 2332800, while the sum is 53.

The spelling of 54126513989 in words is "fifty-four billion, one hundred twenty-six million, five hundred thirteen thousand, nine hundred eighty-nine".