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23913478961 = 173643386131
BaseRepresentation
bin10110010001010110…
…101011101100110001
32021201120102121010222
4112101112223230301
5342433322311321
614552524502425
71504412134361
oct262126535461
967646377128
1023913478961
11a161598759
1247746aaa15
1323413c4a68
14122bd569a1
1594e6003ab
hex5915abb31

23913478961 has 8 divisors (see below), whose sum is σ = 25327170144. Its totient is φ = 22500567360.

The previous prime is 23913478943. The next prime is 23913478969. The reversal of 23913478961 is 16987431932.

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 23913478961 - 210 = 23913477937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23913478969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131135 + ... + 254996.

It is an arithmetic number, because the mean of its divisors is an integer number (3165896268).

Almost surely, 223913478961 is an apocalyptic number.

It is an amenable number.

23913478961 is a deficient number, since it is larger than the sum of its proper divisors (1413691183).

23913478961 is a wasteful number, since it uses less digits than its factorization.

23913478961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389791.

The product of its digits is 1959552, while the sum is 53.

The spelling of 23913478961 in words is "twenty-three billion, nine hundred thirteen million, four hundred seventy-eight thousand, nine hundred sixty-one".

Divisors: 1 17 3643 61931 386131 6564227 1406675233 23913478961