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11668764415 = 571130308479
BaseRepresentation
bin10101101111000001…
…10011011011111111
31010010012211122112211
422313200303123333
5142344200430130
65205514041251
7562106601220
oct126740633377
933105748484
1011668764415
114a48793460
122317a19227
13113c64b539
147c9a37247
15484641a2a
hex2b78336ff

11668764415 has 16 divisors (see below), whose sum is σ = 17457684480. Its totient is φ = 7274034720.

The previous prime is 11668764403. The next prime is 11668764427. The reversal of 11668764415 is 51446786611.

It is an interprime number because it is at equal distance from previous prime (11668764403) and next prime (11668764427).

It is not a de Polignac number, because 11668764415 - 25 = 11668764383 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15153855 + ... + 15154624.

It is an arithmetic number, because the mean of its divisors is an integer number (1091105280).

Almost surely, 211668764415 is an apocalyptic number.

11668764415 is a deficient number, since it is larger than the sum of its proper divisors (5788920065).

11668764415 is a wasteful number, since it uses less digits than its factorization.

11668764415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30308502.

The product of its digits is 967680, while the sum is 49.

The spelling of 11668764415 in words is "eleven billion, six hundred sixty-eight million, seven hundred sixty-four thousand, four hundred fifteen".

Divisors: 1 5 7 11 35 55 77 385 30308479 151542395 212159353 333393269 1060796765 1666966345 2333752883 11668764415