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205655206546461 = 379793105073641
BaseRepresentation
bin101110110000101011010101…
…100010000100110000011101
3222222011110000221110101010210
4232300223111202010300131
5203423423330333441321
62005220410404123033
761214045506656330
oct5660532542046035
9888143027411123
10205655206546461
115a589979747911
121b095434696479
138a9a283618b89
1438ada9d64a617
1518b986d128b76
hexbb0ad5884c1d

205655206546461 has 8 divisors (see below), whose sum is σ = 313379362356544. Its totient is φ = 117517260883680.

The previous prime is 205655206546459. The next prime is 205655206546511. The reversal of 205655206546461 is 164645602556502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205655206546461 - 21 = 205655206546459 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 (205655206546261) 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, 4896552536800 + ... + 4896552536841.

It is an arithmetic number, because the mean of its divisors is an integer number (39172420294568).

Almost surely, 2205655206546461 is an apocalyptic number.

205655206546461 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

205655206546461 is a deficient number, since it is larger than the sum of its proper divisors (107724155810083).

205655206546461 is an equidigital number, since it uses as much as digits as its factorization.

205655206546461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9793105073651.

The product of its (nonzero) digits is 51840000, while the sum is 57.

The spelling of 205655206546461 in words is "two hundred five trillion, six hundred fifty-five billion, two hundred six million, five hundred forty-six thousand, four hundred sixty-one".

Divisors: 1 3 7 21 9793105073641 29379315220923 68551735515487 205655206546461