544161661663 has 8 divisors (see below), whose sum is σ = 571103070048. Its totient is φ = 517493770464.

The previous prime is 544161661579. The next prime is 544161661727. The reversal of 544161661663 is 366166161445.

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 544161661663 - 2¹³ = 544161653471 is a prime.

It is a super-2 number, since 2×544161661663² (a number of 24 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 (544161661763) 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, 68375220 + ... + 68383177.

It is an arithmetic number, because the mean of its divisors is an integer number (71387883756).

Almost surely, 2^544161661663 is an apocalyptic number.

544161661663 is a deficient number, since it is larger than the sum of its proper divisors (26941408385).

544161661663 is a wasteful number, since it uses less digits than its factorization.

544161661663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136758593.

The product of its digits is 1866240, while the sum is 49.

The spelling of 544161661663 in words is "five hundred forty-four billion, one hundred sixty-one million, six hundred sixty-one thousand, six hundred sixty-three".