544442640157 has 8 divisors (see below), whose sum is σ = 589392599040. Its totient is φ = 499931217840.

The previous prime is 544442640127. The next prime is 544442640173. The reversal of 544442640157 is 751046244445.

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

It is a cyclic number.

It is not a de Polignac number, because 544442640157 - 2¹¹ = 544442638109 is a prime.

It is a super-3 number, since 3×544442640157³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (544442640107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109631557 + ... + 109636522.

It is an arithmetic number, because the mean of its divisors is an integer number (73674074880).

Almost surely, 2^544442640157 is an apocalyptic number.

It is an amenable number.

544442640157 is a deficient number, since it is larger than the sum of its proper divisors (44949958883).

544442640157 is a wasteful number, since it uses less digits than its factorization.

544442640157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219268283.

The product of its (nonzero) digits is 2150400, while the sum is 46.

The spelling of 544442640157 in words is "five hundred forty-four billion, four hundred forty-two million, six hundred forty thousand, one hundred fifty-seven".