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10011101987 is a prime number
BaseRepresentation
bin10010101001011010…
…10100101100100011
3221211200122200012002
421110231110230203
5131000320230422
64333220354215
7503040651155
oct112455245443
927750580162
1010011101987
114278008107
121b3484596b
13c370a67b3
146ad812ad5
153d8d52692
hex254b54b23

10011101987 has 2 divisors, whose sum is σ = 10011101988. Its totient is φ = 10011101986.

The previous prime is 10011101939. The next prime is 10011102019. The reversal of 10011101987 is 78910111001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10011101987 - 220 = 10010053411 is a prime.

It is not a weakly prime, because it can be changed into another prime (10011107987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005550993 + 5005550994.

It is an arithmetic number, because the mean of its divisors is an integer number (5005550994).

Almost surely, 210011101987 is an apocalyptic number.

10011101987 is a deficient number, since it is larger than the sum of its proper divisors (1).

10011101987 is an equidigital number, since it uses as much as digits as its factorization.

10011101987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 29.

Adding to 10011101987 its reverse (78910111001), we get a palindrome (88921212988).

The spelling of 10011101987 in words is "ten billion, eleven million, one hundred one thousand, nine hundred eighty-seven".