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122691616897 = 181904374959
BaseRepresentation
bin111001001000011111…
…1011000000010000001
3102201200120220220202011
41302100333120002001
54002233023220042
6132210323052521
711602261351663
oct1622077300201
9381616826664
10122691616897
11480402457a3
121b941211141
13b753a271a5
145d1c9d6533
1532d1431a17
hex1c90fd8081

122691616897 has 8 divisors (see below), whose sum is σ = 123384759680. Its totient is φ = 121998642480.

The previous prime is 122691616889. The next prime is 122691616903. The reversal of 122691616897 is 798616196221.

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

It is a cyclic number.

It is not a de Polignac number, because 122691616897 - 23 = 122691616889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122691616807) 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, 1599304 + ... + 1674262.

It is an arithmetic number, because the mean of its divisors is an integer number (15423094960).

Almost surely, 2122691616897 is an apocalyptic number.

It is an amenable number.

122691616897 is a deficient number, since it is larger than the sum of its proper divisors (693142783).

122691616897 is an equidigital number, since it uses as much as digits as its factorization.

122691616897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84183.

The product of its digits is 3919104, while the sum is 58.

The spelling of 122691616897 in words is "one hundred twenty-two billion, six hundred ninety-one million, six hundred sixteen thousand, eight hundred ninety-seven".

Divisors: 1 181 9043 74959 1636783 13567579 677854237 122691616897