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21930068341 = 40960478867
BaseRepresentation
bin10100011011001000…
…100100100101110101
32002121100021220021101
4110123020210211311
5324403044141331
614024033250101
71404306335206
oct243310444565
962540256241
1021930068341
119333a51a25
124300403931
1320b65085cc
1410c07795ad
15885418061
hex51b224975

21930068341 has 8 divisors (see below), whose sum is σ = 21989802240. Its totient is φ = 21870365088.

The previous prime is 21930068339. The next prime is 21930068371. The reversal of 21930068341 is 14386003912.

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 21930068341 - 21 = 21930068339 is a prime.

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 21930068341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21930068371) 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, 2468790 + ... + 2477656.

It is an arithmetic number, because the mean of its divisors is an integer number (2748725280).

Almost surely, 221930068341 is an apocalyptic number.

It is an amenable number.

21930068341 is a deficient number, since it is larger than the sum of its proper divisors (59733899).

21930068341 is an equidigital number, since it uses as much as digits as its factorization.

21930068341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15323.

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 21930068341 in words is "twenty-one billion, nine hundred thirty million, sixty-eight thousand, three hundred forty-one".

Divisors: 1 409 6047 8867 2473223 3626603 53618749 21930068341