556665161501 has 8 divisors (see below), whose sum is σ = 570321394944. Its totient is φ = 543012691680.

The previous prime is 556665161497. The next prime is 556665161527. The reversal of 556665161501 is 105161566655.

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 556665161501 - 2² = 556665161497 is a prime.

It is a super-2 number, since 2×556665161501² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556665161561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 640301 + ... + 1234226.

It is an arithmetic number, because the mean of its divisors is an integer number (71290174368).

Almost surely, 2^556665161501 is an apocalyptic number.

It is an amenable number.

556665161501 is a deficient number, since it is larger than the sum of its proper divisors (13656233443).

556665161501 is a wasteful number, since it uses less digits than its factorization.

556665161501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1881811.

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 556665161501 in words is "five hundred fifty-six billion, six hundred sixty-five million, one hundred sixty-one thousand, five hundred one".