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211013517855901 = 31471619556916063
BaseRepresentation
bin101111111110101001101001…
…110001100100110010011101
31000200010200202212111222002111
4233332221221301210302131
5210124221141032342101
62024442134415354021
762306136453421555
oct5776515161446235
91020120685458074
10211013517855901
116126536a79a4a2
121b7bba00222911
13909864914c227
143a17174608165
15195de2c38e251
hexbfea69c64c9d

211013517855901 has 32 divisors (see below), whose sum is σ = 222646114713600. Its totient is φ = 199690062013440.

The previous prime is 211013517855851. The next prime is 211013517855911. The reversal of 211013517855901 is 109558715310112.

It is a cyclic number.

It is not a de Polignac number, because 211013517855901 - 237 = 210876078902429 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 (211013517855911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13136611396 + ... + 13136627458.

It is an arithmetic number, because the mean of its divisors is an integer number (6957691084800).

Almost surely, 2211013517855901 is an apocalyptic number.

It is an amenable number.

211013517855901 is a deficient number, since it is larger than the sum of its proper divisors (11632596857699).

211013517855901 is a wasteful number, since it uses less digits than its factorization.

211013517855901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23329.

The product of its (nonzero) digits is 378000, while the sum is 49.

The spelling of 211013517855901 in words is "two hundred eleven trillion, thirteen billion, five hundred seventeen million, eight hundred fifty-five thousand, nine hundred one".

Divisors: 1 31 47 1457 1619 5569 16063 50189 76093 172639 261743 497953 754961 2358883 8114033 9016211 23403791 26005997 89454847 279502541 423761917 806185907 1222281859 2773100257 4204377809 13136619427 37890737629 130335712079 144827397293 4489649316083 6806887672771 211013517855901