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10211020199965 = 513715897375203
BaseRepresentation
bin1001010010010111000000…
…1110110101100000011101
31100011011102112222002201001
42110211300032311200131
52314244132132344330
633414513344150301
72102502412425214
oct224456016654035
940134375862631
1010211020199965
11328751877a5a2
12118ab6a008391
13590b83625480
14274304a5c07b
1512a92aae69ca
hex949703b581d

10211020199965 has 32 divisors (see below), whose sum is σ = 13383940905216. Its totient is φ = 7432961733120.

The previous prime is 10211020199957. The next prime is 10211020200061. The reversal of 10211020199965 is 56999102011201.

It is not a de Polignac number, because 10211020199965 - 23 = 10211020199957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27027054 + ... + 27402256.

It is an arithmetic number, because the mean of its divisors is an integer number (418248153288).

Almost surely, 210211020199965 is an apocalyptic number.

It is an amenable number.

10211020199965 is a deficient number, since it is larger than the sum of its proper divisors (3172920705251).

10211020199965 is a wasteful number, since it uses less digits than its factorization.

10211020199965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381189.

The product of its (nonzero) digits is 87480, while the sum is 46.

The spelling of 10211020199965 in words is "ten trillion, two hundred eleven billion, twenty million, one hundred ninety-nine thousand, nine hundred sixty-five".

Divisors: 1 5 13 65 71 355 923 4615 5897 29485 76661 375203 383305 418687 1876015 2093435 4877639 5442931 24388195 26639413 27214655 133197065 346312369 1731561845 2212572091 11062860455 28763437183 143817185915 157092618461 785463092305 2042204039993 10211020199965