Search a number
-
+
13123301122451 = 1361714291144939
BaseRepresentation
bin1011111011111000000110…
…1100111010000110010011
31201110120112102022112110102
42332332001230322012103
53210003010041404301
643524432235323015
72523061431012452
oct276760154720623
951416472275412
1013123301122451
1141aa6193a5a93
12157b472bb046b
137426a2a58980
1433525795ab99
1517b579362b6b
hexbef81b3a193

13123301122451 has 16 divisors (see below), whose sum is σ = 14165609858400. Its totient is φ = 12085709061888.

The previous prime is 13123301122441. The next prime is 13123301122457. The reversal of 13123301122451 is 15422110332131.

It is a cyclic number.

It is not a de Polignac number, because 13123301122451 - 226 = 13123234013587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13123301122457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10889540 + ... + 12034478.

It is an arithmetic number, because the mean of its divisors is an integer number (885350616150).

Almost surely, 213123301122451 is an apocalyptic number.

13123301122451 is a deficient number, since it is larger than the sum of its proper divisors (1042308735949).

13123301122451 is a wasteful number, since it uses less digits than its factorization.

13123301122451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146998.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 13123301122451 its reverse (15422110332131), we get a palindrome (28545411454582).

The spelling of 13123301122451 in words is "thirteen trillion, one hundred twenty-three billion, three hundred one million, one hundred twenty-two thousand, four hundred fifty-one".

Divisors: 1 13 617 1429 8021 18577 881693 1144939 11462009 14884207 706427363 1636117831 9183555719 21269531803 1009484701727 13123301122451