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10023919447 = 16057624271
BaseRepresentation
bin10010101010111100…
…01101111101010111
3221212120202212102211
421111132031331113
5131012110410242
64334355214251
7503254623643
oct112536157527
927776685384
1010023919447
114284272053
121b38ba7387
13c399438a9
146b13cbc23
153da035317
hex25578df57

10023919447 has 4 divisors (see below), whose sum is σ = 10024559776. Its totient is φ = 10023279120.

The previous prime is 10023919421. The next prime is 10023919459. The reversal of 10023919447 is 74491932001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74491932001 = 174381878353.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-10023919447 is a prime.

It is a super-2 number, since 2×100239194472 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10023919487) 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, 296079 + ... + 328192.

It is an arithmetic number, because the mean of its divisors is an integer number (2506139944).

Almost surely, 210023919447 is an apocalyptic number.

10023919447 is a deficient number, since it is larger than the sum of its proper divisors (640329).

10023919447 is an equidigital number, since it uses as much as digits as its factorization.

10023919447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640328.

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 10023919447 in words is "ten billion, twenty-three million, nine hundred nineteen thousand, four hundred forty-seven".

Divisors: 1 16057 624271 10023919447