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10000001001 = 317268772973
BaseRepresentation
bin10010101000000101…
…11110011111101001
3221210220202200111110
421110002332133221
5130440000013001
64332142420533
7502544414604
oct112402763751
927726680443
1010000001001
114271815841
121b30b91749
13c349baa73
146ac16333b
153d7dad3d6
hex2540be7e9

10000001001 has 16 divisors (see below), whose sum is σ = 14123096064. Its totient is φ = 6272089344.

The previous prime is 10000000999. The next prime is 10000001041. The reversal of 10000001001 is 10010000001.

It is not a de Polignac number, because 10000001001 - 21 = 10000000999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (3).

It is not an unprimeable number, because it can be changed into a prime (10000001041) 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, 100551 + ... + 173523.

It is an arithmetic number, because the mean of its divisors is an integer number (882693504).

Almost surely, 210000001001 is an apocalyptic number.

It is an amenable number.

10000001001 is a deficient number, since it is larger than the sum of its proper divisors (4123095063).

10000001001 is a wasteful number, since it uses less digits than its factorization.

10000001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75680.

The product of its (nonzero) digits is 1, while the sum is 3.

Adding to 10000001001 its reverse (10010000001), we get a palindrome (20010001002).

It can be divided in two parts, 1000000 and 1001, that added together give a palindrome (1001001).

The spelling of 10000001001 in words is "ten billion, one thousand, one".

Divisors: 1 3 17 51 2687 8061 45679 72973 137037 218919 1240541 3721623 196078451 588235353 3333333667 10000001001