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38447668701 = 3213328612553
BaseRepresentation
bin100011110011101010…
…001101110111011101
310200020111001221021200
4203303222031313131
51112220100344301
625355042550113
72530524535401
oct436352156735
9120214057250
1038447668701
111533a785612
127550068339
133819599a30
141c0a365101
1510005a1c86
hex8f3a8dddd

38447668701 has 12 divisors (see below), whose sum is σ = 59807484828. Its totient is φ = 23660103744.

The previous prime is 38447668643. The next prime is 38447668703. The reversal of 38447668701 is 10786674483.

It can be written as a sum of positive squares in 2 ways, for example, as 2237384601 + 36210284100 = 47301^2 + 190290^2 .

It is not a de Polignac number, because 38447668701 - 217 = 38447537629 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38447668703) 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, 164306160 + ... + 164306393.

It is an arithmetic number, because the mean of its divisors is an integer number (4983957069).

Almost surely, 238447668701 is an apocalyptic number.

It is an amenable number.

38447668701 is a deficient number, since it is larger than the sum of its proper divisors (21359816127).

38447668701 is a wasteful number, since it uses less digits than its factorization.

38447668701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328612572 (or 328612569 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The spelling of 38447668701 in words is "thirty-eight billion, four hundred forty-seven million, six hundred sixty-eight thousand, seven hundred one".

Divisors: 1 3 9 13 39 117 328612553 985837659 2957512977 4271963189 12815889567 38447668701