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13122420201455 = 510334161161057
BaseRepresentation
bin1011111011110100110100…
…1100011101011111101111
31201110111021000201010000212
42332331031030131133233
53204444204032421310
643524205010213035
72523030543215615
oct276751514353757
951414230633025
1013122420201455
1141aa207115004
12157b267b8417b
137425923b2446
143351b29696b5
1517b526d54205
hexbef4d31d7ef

13122420201455 has 16 divisors (see below), whose sum is σ = 15762785057184. Its totient is φ = 10487349780480.

The previous prime is 13122420201437. The next prime is 13122420201461. The reversal of 13122420201455 is 55410202422131.

It is not a de Polignac number, because 13122420201455 - 210 = 13122420200431 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 15 ways as a sum of consecutive naturals, for example, 214890287 + ... + 214951343.

It is an arithmetic number, because the mean of its divisors is an integer number (985174066074).

Almost surely, 213122420201455 is an apocalyptic number.

13122420201455 is a deficient number, since it is larger than the sum of its proper divisors (2640364855729).

13122420201455 is a wasteful number, since it uses less digits than its factorization.

13122420201455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103706.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 13122420201455 its reverse (55410202422131), we get a palindrome (68532622623586).

The spelling of 13122420201455 in words is "thirteen trillion, one hundred twenty-two billion, four hundred twenty million, two hundred one thousand, four hundred fifty-five".

Divisors: 1 5 1033 5165 41611 61057 208055 305285 42984163 63071881 214920815 315359405 2540642827 12703214135 2624484040291 13122420201455