55507641128 has 8 divisors (see below), whose sum is σ = 104076827130. Its totient is φ = 27753820560.

The previous prime is 55507641109. The next prime is 55507641149. The reversal of 55507641128 is 82114670555.

It can be written as a sum of positive squares in only one way, i.e., 55131979204 + 375661924 = 234802^2 + 19382^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×55507641128² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3469227563 + ... + 3469227578.

Almost surely, 2^55507641128 is an apocalyptic number.

It is an amenable number.

55507641128 is a deficient number, since it is larger than the sum of its proper divisors (48569186002).

55507641128 is a wasteful number, since it uses less digits than its factorization.

55507641128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6938455147 (or 6938455143 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 44.

The spelling of 55507641128 in words is "fifty-five billion, five hundred seven million, six hundred forty-one thousand, one hundred twenty-eight".