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18676464914941 = 40372146260821
BaseRepresentation
bin1000011111100011101000…
…00011101001000111111101
32110010110012221200212010121
410033301310003221013331
54421443400004234231
6103415503255534541
73635221132305661
oct417616403510775
973113187625117
1018676464914941
115a5070a606129
12211775a38a451
13a5624c30c982
14487d350d88a1
15225c3eba7311
hex10fc740e91fd

18676464914941 has 4 divisors (see below), whose sum is σ = 18676511579484. Its totient is φ = 18676418250400.

The previous prime is 18676464914911. The next prime is 18676464914957. The reversal of 18676464914941 is 14941946467681.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6677314402500 + 11999150512441 = 2584050^2 + 3463979^2 .

It is a cyclic number.

It is not a de Polignac number, because 18676464914941 - 27 = 18676464914813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18676464914911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22726690 + ... + 23534131.

It is an arithmetic number, because the mean of its divisors is an integer number (4669127894871).

Almost surely, 218676464914941 is an apocalyptic number.

It is an amenable number.

18676464914941 is a deficient number, since it is larger than the sum of its proper divisors (46664543).

18676464914941 is an equidigital number, since it uses as much as digits as its factorization.

18676464914941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46664542.

The product of its digits is 250822656, while the sum is 70.

The spelling of 18676464914941 in words is "eighteen trillion, six hundred seventy-six billion, four hundred sixty-four million, nine hundred fourteen thousand, nine hundred forty-one".

Divisors: 1 403721 46260821 18676464914941