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23001500513 = 161914207227
BaseRepresentation
bin10101011010111111…
…110000101101100001
32012101000101021220102
4111122333300231201
5334101341004023
614322225552145
71442666346155
oct253277605541
965330337812
1023001500513
119833824862
12455b1a5655
132227496144
141182b9d065
158e9509628
hex55aff0b61

23001500513 has 4 divisors (see below), whose sum is σ = 23015709360. Its totient is φ = 22987291668.

The previous prime is 23001500477. The next prime is 23001500573. The reversal of 23001500513 is 31500510032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23001500513 - 26 = 23001500449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23001500573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7101995 + ... + 7105232.

It is an arithmetic number, because the mean of its divisors is an integer number (5753927340).

Almost surely, 223001500513 is an apocalyptic number.

It is an amenable number.

23001500513 is a deficient number, since it is larger than the sum of its proper divisors (14208847).

23001500513 is a wasteful number, since it uses less digits than its factorization.

23001500513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14208846.

The product of its (nonzero) digits is 450, while the sum is 20.

The spelling of 23001500513 in words is "twenty-three billion, one million, five hundred thousand, five hundred thirteen".

Divisors: 1 1619 14207227 23001500513