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2115546013 = 71915906361
BaseRepresentation
bin111111000011000…
…1010101110011101
312110102202212120001
41332012022232131
513313034433023
6545531254301
7103265562430
oct17606125635
95412685501
102115546013
11996197039
124b05aa391
132793a1b99
14160d75817
15c5ad86ad
hex7e18ab9d

2115546013 has 8 divisors (see below), whose sum is σ = 2545017920. Its totient is φ = 1717886880.

The previous prime is 2115546007. The next prime is 2115546031. The reversal of 2115546013 is 3106455112.

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 2115546013 - 221 = 2113448861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115546073) 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, 7953048 + ... + 7953313.

It is an arithmetic number, because the mean of its divisors is an integer number (318127240).

Almost surely, 22115546013 is an apocalyptic number.

It is an amenable number.

2115546013 is a deficient number, since it is larger than the sum of its proper divisors (429471907).

2115546013 is a wasteful number, since it uses less digits than its factorization.

2115546013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15906387.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 2115546013 is about 45995.0650939859. The cubic root of 2115546013 is about 1283.7313834378.

Subtracting 2115546013 from its reverse (3106455112), we obtain a palindrome (990909099).

The spelling of 2115546013 in words is "two billion, one hundred fifteen million, five hundred forty-six thousand, thirteen".

Divisors: 1 7 19 133 15906361 111344527 302220859 2115546013