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55981948841 = 7132943493333
BaseRepresentation
bin110100001000110010…
…001011111110101001
312100111110220122202122
4310020302023332221
51404122334330331
641415011241025
74021166466560
oct641062137651
9170443818678
1055981948841
1121818394825
12aa242a9175
135382188420
1429d0da0bd7
1516c9b1417b
hexd08c8bfa9

55981948841 has 32 divisors (see below), whose sum is σ = 72934498560. Its totient is φ = 41771407104.

The previous prime is 55981948831. The next prime is 55981948843. The reversal of 55981948841 is 14884918955.

55981948841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55981948841 - 230 = 54908207017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55981948843) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133190 + ... + 360143.

It is an arithmetic number, because the mean of its divisors is an integer number (2279203080).

Almost surely, 255981948841 is an apocalyptic number.

It is an amenable number.

55981948841 is a deficient number, since it is larger than the sum of its proper divisors (16952549719).

55981948841 is a wasteful number, since it uses less digits than its factorization.

55981948841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493425.

The product of its digits is 16588800, while the sum is 62.

The spelling of 55981948841 in words is "fifty-five billion, nine hundred eighty-one million, nine hundred forty-eight thousand, eight hundred forty-one".

Divisors: 1 7 13 29 43 91 203 301 377 559 1247 2639 3913 8729 16211 113477 493333 3453331 6413329 14306657 21213319 44893303 100146599 148493233 185986541 275773147 615186251 1301905787 1930412029 4306303757 7997421263 55981948841