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10947236389 = 18160481969
BaseRepresentation
bin10100011001000000…
…11001001000100101
31001020221011020011121
422030200121020211
5134404443031024
65010141133541
7535165655035
oct121440311045
931227136147
1010947236389
11470847a801
12215625a2b1
13105601238b
1475bc978c5
1544111a8e4
hex28c819225

10947236389 has 4 divisors (see below), whose sum is σ = 11007718540. Its totient is φ = 10886754240.

The previous prime is 10947236383. The next prime is 10947236431. The reversal of 10947236389 is 98363274901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51008164 + 10896228225 = 7142^2 + 104385^2 .

It is a cyclic number.

It is not a de Polignac number, because 10947236389 - 213 = 10947228197 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10947236383) 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, 30240804 + ... + 30241165.

It is an arithmetic number, because the mean of its divisors is an integer number (2751929635).

Almost surely, 210947236389 is an apocalyptic number.

It is an amenable number.

10947236389 is a deficient number, since it is larger than the sum of its proper divisors (60482151).

10947236389 is an equidigital number, since it uses as much as digits as its factorization.

10947236389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60482150.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The spelling of 10947236389 in words is "ten billion, nine hundred forty-seven million, two hundred thirty-six thousand, three hundred eighty-nine".

Divisors: 1 181 60481969 10947236389