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30855043489 = 472383275489
BaseRepresentation
bin11100101111000110…
…101001100110100001
32221122100012121112111
4130233012221212201
51001142342342424
622101414355321
72141421354004
oct345706514641
987570177474
1030855043489
11120a395a946
125b9135bb41
132ba957abaa
1416c9c2153b
15c08c25194
hex72f1a99a1

30855043489 has 8 divisors (see below), whose sum is σ = 31524871680. Its totient is φ = 30185771136.

The previous prime is 30855043481. The next prime is 30855043507. The reversal of 30855043489 is 98434055803.

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 30855043489 - 23 = 30855043481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30855043481) 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, 25744 + ... + 249745.

It is an arithmetic number, because the mean of its divisors is an integer number (3940608960).

Almost surely, 230855043489 is an apocalyptic number.

It is an amenable number.

30855043489 is a deficient number, since it is larger than the sum of its proper divisors (669828191).

30855043489 is a wasteful number, since it uses less digits than its factorization.

30855043489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277919.

The product of its (nonzero) digits is 2073600, while the sum is 49.

The spelling of 30855043489 in words is "thirty billion, eight hundred fifty-five million, forty-three thousand, four hundred eighty-nine".

Divisors: 1 47 2383 112001 275489 12947983 656490287 30855043489