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54640631127 = 397718642317
BaseRepresentation
bin110010111000110101…
…011101110101010111
312020000222222122202210
4302320311131311113
51343401000144002
641033534204503
73643021462365
oct627065356527
9166028878683
1054640631127
112119a236995
12a70b053733
1351ca314bc4
142904ba6635
15164beb196c
hexcb8d5dd57

54640631127 has 8 divisors (see below), whose sum is σ = 72928748016. Its totient is φ = 36389800832.

The previous prime is 54640631057. The next prime is 54640631153. The reversal of 54640631127 is 72113604645.

It is a happy number.

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 54640631127 - 215 = 54640598359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54640631197) 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, 9318228 + ... + 9324089.

It is an arithmetic number, because the mean of its divisors is an integer number (9116093502).

Almost surely, 254640631127 is an apocalyptic number.

54640631127 is a deficient number, since it is larger than the sum of its proper divisors (18288116889).

54640631127 is a wasteful number, since it uses less digits than its factorization.

54640631127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18643297.

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 54640631127 in words is "fifty-four billion, six hundred forty million, six hundred thirty-one thousand, one hundred twenty-seven".

Divisors: 1 3 977 2931 18642317 55926951 18213543709 54640631127