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20085024961 = 31976679423
BaseRepresentation
bin10010101101001010…
…010010100011000001
31220211202111222120101
4102231022102203001
5312113231244321
613121003442401
71310503616041
oct225512224301
956752458511
1020085024961
118577522591
123a86526401
131b811a7271
14d876d9721
157c8463791
hex4ad2928c1

20085024961 has 8 divisors (see below), whose sum is σ = 20946673664. Its totient is φ = 19236735360.

The previous prime is 20085024959. The next prime is 20085024977. The reversal of 20085024961 is 16942058002.

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 20085024961 - 21 = 20085024959 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 20085024961.

It is not an unprimeable number, because it can be changed into a prime (20085024461) 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, 3336705 + ... + 3342718.

It is an arithmetic number, because the mean of its divisors is an integer number (2618334208).

Almost surely, 220085024961 is an apocalyptic number.

It is an amenable number.

20085024961 is a deficient number, since it is larger than the sum of its proper divisors (861648703).

20085024961 is an equidigital number, since it uses as much as digits as its factorization.

20085024961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6679551.

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 20085024961 in words is "twenty billion, eighty-five million, twenty-four thousand, nine hundred sixty-one".

Divisors: 1 31 97 3007 6679423 207062113 647904031 20085024961