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13897466901 = 321790833117
BaseRepresentation
bin11001111000101101…
…01000010000010101
31022212112112110121100
430330112220100111
5211430222420101
610215010540313
71001251343133
oct147426502025
938775473540
1013897466901
11599183763a
12283a297699
1314062bc3c6
1495ba26753
1556512ce86
hex33c5a8415

13897466901 has 12 divisors (see below), whose sum is σ = 21254949612. Its totient is φ = 8719979136.

The previous prime is 13897466899. The next prime is 13897466903. The reversal of 13897466901 is 10966479831.

13897466901 is a `hidden beast` number, since 1 + 3 + 8 + 97 + 466 + 90 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (13897466899) and next prime (13897466903).

It can be written as a sum of positive squares in 2 ways, for example, as 8913248100 + 4984218801 = 94410^2 + 70599^2 .

It is not a de Polignac number, because 13897466901 - 21 = 13897466899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13897466903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45416406 + ... + 45416711.

It is an arithmetic number, because the mean of its divisors is an integer number (1771245801).

Almost surely, 213897466901 is an apocalyptic number.

It is an amenable number.

13897466901 is a deficient number, since it is larger than the sum of its proper divisors (7357482711).

13897466901 is a wasteful number, since it uses less digits than its factorization.

13897466901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90833140 (or 90833137 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 13897466901 in words is "thirteen billion, eight hundred ninety-seven million, four hundred sixty-six thousand, nine hundred one".

Divisors: 1 3 9 17 51 153 90833117 272499351 817498053 1544162989 4632488967 13897466901