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27625441457 = 1911093131071
BaseRepresentation
bin11001101110100110…
…101100100010110001
32122022021010211102102
4121232212230202301
5423034103111312
620405125030145
71665404243435
oct315646544261
978267124372
1027625441457
1110796929059
12542b855355
1327b3446583
1414a0d2c9c5
15aba42aec2
hex66e9ac8b1

27625441457 has 8 divisors (see below), whose sum is σ = 29082255360. Its totient is φ = 26168911920.

The previous prime is 27625441433. The next prime is 27625441469. The reversal of 27625441457 is 75414452672.

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 27625441457 - 222 = 27621247153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27625441477) 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, 145232 + ... + 276302.

It is an arithmetic number, because the mean of its divisors is an integer number (3635281920).

Almost surely, 227625441457 is an apocalyptic number.

It is an amenable number.

27625441457 is a deficient number, since it is larger than the sum of its proper divisors (1456813903).

27625441457 is a wasteful number, since it uses less digits than its factorization.

27625441457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142183.

The product of its digits is 1881600, while the sum is 47.

The spelling of 27625441457 in words is "twenty-seven billion, six hundred twenty-five million, four hundred forty-one thousand, four hundred fifty-seven".

Divisors: 1 19 11093 131071 210767 2490349 1453970603 27625441457