55665552943 has 16 divisors (see below), whose sum is σ = 74739764736. Its totient is φ = 40039158240.

The previous prime is 55665552941. The next prime is 55665552973. The reversal of 55665552943 is 34925556655.

It is a cyclic number.

It is not a de Polignac number, because 55665552943 - 2¹ = 55665552941 is a prime.

It is a super-2 number, since 2×55665552943² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55665552941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27803971 + ... + 27805972.

It is an arithmetic number, because the mean of its divisors is an integer number (4671235296).

Almost surely, 2^55665552943 is an apocalyptic number.

55665552943 is a deficient number, since it is larger than the sum of its proper divisors (19074211793).

55665552943 is a wasteful number, since it uses less digits than its factorization.

55665552943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55609974.

The product of its digits is 24300000, while the sum is 55.

The spelling of 55665552943 in words is "fifty-five billion, six hundred sixty-five million, five hundred fifty-two thousand, nine hundred forty-three".