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23215048807 = 137169452911
BaseRepresentation
bin10101100111101110…
…011000100001100111
32012220220012200002111
4111213232120201213
5340021023030212
614355335021451
71451201442016
oct254756304147
965826180074
1023215048807
119933320855
1245ba80a887
13225c7b5092
1411a32aaa7d
1590d13cea7
hex567b98867

23215048807 has 4 divisors (see below), whose sum is σ = 23384501856. Its totient is φ = 23045595760.

The previous prime is 23215048757. The next prime is 23215048837. The reversal of 23215048807 is 70884051232.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23215048807 is a prime.

It is a super-2 number, since 2×232150488072 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23215048807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23215048837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84726319 + ... + 84726592.

It is an arithmetic number, because the mean of its divisors is an integer number (5846125464).

Almost surely, 223215048807 is an apocalyptic number.

23215048807 is a deficient number, since it is larger than the sum of its proper divisors (169453049).

23215048807 is a wasteful number, since it uses less digits than its factorization.

23215048807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169453048.

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 23215048807 in words is "twenty-three billion, two hundred fifteen million, forty-eight thousand, eight hundred seven".

Divisors: 1 137 169452911 23215048807