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24768104661 = 3217161883037
BaseRepresentation
bin10111000100010010…
…110100100011010101
32100221010120002012200
4113010102310203111
5401211113322121
615213414235113
71534530262446
oct270422644325
970833502180
1024768104661
11a55aa49693
124972955a99
132449492641
1412ad6612cd
1599e667a26
hex5c44b48d5

24768104661 has 12 divisors (see below), whose sum is σ = 37880630892. Its totient is φ = 15540771456.

The previous prime is 24768104609. The next prime is 24768104663. The reversal of 24768104661 is 16640186742.

24768104661 is a `hidden beast` number, since 2 + 476 + 81 + 0 + 46 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21476902500 + 3291202161 = 146550^2 + 57369^2 .

It is not a de Polignac number, because 24768104661 - 213 = 24768096469 is a prime.

It is a super-2 number, since 2×247681046612 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24768104663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80941366 + ... + 80941671.

It is an arithmetic number, because the mean of its divisors is an integer number (3156719241).

Almost surely, 224768104661 is an apocalyptic number.

It is an amenable number.

24768104661 is a deficient number, since it is larger than the sum of its proper divisors (13112526231).

24768104661 is a wasteful number, since it uses less digits than its factorization.

24768104661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161883060 (or 161883057 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 24768104661 in words is "twenty-four billion, seven hundred sixty-eight million, one hundred four thousand, six hundred sixty-one".

Divisors: 1 3 9 17 51 153 161883037 485649111 1456947333 2752011629 8256034887 24768104661