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102412800401 = 229447217469
BaseRepresentation
bin101111101100001000…
…1110101000110010001
3100210100022202022011112
41133120101311012101
53134220134103101
6115014153423105
710253612304002
oct1373021650621
9323308668145
10102412800401
113a4843a081a
1217a21a0aa95
13987165a7a2
144d576931a9
1529e5e8d6bb
hex17d8475191

102412800401 has 4 divisors (see below), whose sum is σ = 102860018100. Its totient is φ = 101965582704.

The previous prime is 102412800389. The next prime is 102412800449. The reversal of 102412800401 is 104008214201.

It is a Cunningham number, because it is equal to 3200202+1.

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 95382145600 + 7030654801 = 308840^2 + 83849^2 .

It is a cyclic number.

It is not a de Polignac number, because 102412800401 - 218 = 102412538257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102412800481) 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, 223608506 + ... + 223608963.

It is an arithmetic number, because the mean of its divisors is an integer number (25715004525).

Almost surely, 2102412800401 is an apocalyptic number.

It is an amenable number.

102412800401 is a deficient number, since it is larger than the sum of its proper divisors (447217699).

102412800401 is an equidigital number, since it uses as much as digits as its factorization.

102412800401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447217698.

The product of its (nonzero) digits is 512, while the sum is 23.

The spelling of 102412800401 in words is "one hundred two billion, four hundred twelve million, eight hundred thousand, four hundred one".

Divisors: 1 229 447217469 102412800401