544531253438 has 4 divisors (see below), whose sum is σ = 816796880160. Its totient is φ = 272265626718.

The previous prime is 544531253389. The next prime is 544531253459. The reversal of 544531253438 is 834352135445.

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: 834352135445 = 5 ⋅166870427089.

It is a junction number, because it is equal to n+sod(n) for n = 544531253392 and 544531253401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136132813358 + ... + 136132813361.

It is an arithmetic number, because the mean of its divisors is an integer number (204199220040).

Almost surely, 2^544531253438 is an apocalyptic number.

544531253438 is a deficient number, since it is larger than the sum of its proper divisors (272265626722).

544531253438 is a wasteful number, since it uses less digits than its factorization.

544531253438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272265626721.

The product of its digits is 3456000, while the sum is 47.

The spelling of 544531253438 in words is "five hundred forty-four billion, five hundred thirty-one million, two hundred fifty-three thousand, four hundred thirty-eight".