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38507769697 = 397844711483
BaseRepresentation
bin100011110111001111…
…011110111101100001
310200101200011101100111
4203313033132331201
51112330442112242
625405031051321
72532154433065
oct436717367541
9120350141314
1038507769697
11153706a5361
127568210b41
133828b80957
141c1432baa5
1510059c4817
hex8f73def61

38507769697 has 8 divisors (see below), whose sum is σ = 38612699136. Its totient is φ = 38402880912.

The previous prime is 38507769679. The next prime is 38507769733. The reversal of 38507769697 is 79696770583.

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 38507769697 - 219 = 38507245409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38507769607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3347718 + ... + 3359200.

It is an arithmetic number, because the mean of its divisors is an integer number (4826587392).

Almost surely, 238507769697 is an apocalyptic number.

It is an amenable number.

38507769697 is a deficient number, since it is larger than the sum of its proper divisors (104929439).

38507769697 is a wasteful number, since it uses less digits than its factorization.

38507769697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20327.

The product of its (nonzero) digits is 120022560, while the sum is 67.

The spelling of 38507769697 in words is "thirty-eight billion, five hundred seven million, seven hundred sixty-nine thousand, six hundred ninety-seven".

Divisors: 1 397 8447 11483 3353459 4558751 96996901 38507769697