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15680111101001 = 28156399113867
BaseRepresentation
bin1110010000101100111101…
…1100111100010001001001
32001112000002220101000122122
43210023033130330101021
54023400331420213001
653203202114501025
73205564525154624
oct344131734742111
961460086330578
1015680111101001
114aa5996a33a66
121912ab1594775
13899822011319
143c2cc8574dbb
151c2d205e9b1b
hexe42cf73c449

15680111101001 has 8 divisors (see below), whose sum is σ = 15763862477664. Its totient is φ = 15596557953760.

The previous prime is 15680111100961. The next prime is 15680111101009. The reversal of 15680111101001 is 10010111108651.

15680111101001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 15680111101001 - 230 = 15679037359177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15680111101009) 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, 49398731 + ... + 49715136.

It is an arithmetic number, because the mean of its divisors is an integer number (1970482809708).

Almost surely, 215680111101001 is an apocalyptic number.

It is an amenable number.

15680111101001 is a deficient number, since it is larger than the sum of its proper divisors (83751376663).

15680111101001 is an equidigital number, since it uses as much as digits as its factorization.

15680111101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99114711.

The product of its (nonzero) digits is 240, while the sum is 26.

Adding to 15680111101001 its reverse (10010111108651), we get a palindrome (25690222209652).

The spelling of 15680111101001 in words is "fifteen trillion, six hundred eighty billion, one hundred eleven million, one hundred one thousand, one".

Divisors: 1 281 563 158203 99113867 27850996627 55801107121 15680111101001