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52115472951615 = 3251158121621147
BaseRepresentation
bin10111101100110000101000…
…10000001010100100111111
320211112012010220201211200200
423312120110100022210333
523312324442033422430
6302501303500254543
713656135001004613
oct1366302420124477
9224465126654620
1052115472951615
1115673058919597
125a183b2541453
1323106112b7548
14cc258c093343
1560599a460460
hex2f661440a93f

52115472951615 has 12 divisors (see below), whose sum is σ = 90333486449544. Its totient is φ = 27794918907504.

The previous prime is 52115472951601. The next prime is 52115472951673. The reversal of 52115472951615 is 51615927451125.

52115472951615 is a `hidden beast` number, since 5 + 2 + 1 + 1 + 5 + 472 + 9 + 5 + 161 + 5 = 666.

It is not a de Polignac number, because 52115472951615 - 29 = 52115472951103 is a prime.

It is a super-2 number, since 2×521154729516152 (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 579060810529 + ... + 579060810618.

It is an arithmetic number, because the mean of its divisors is an integer number (7527790537462).

Almost surely, 252115472951615 is an apocalyptic number.

52115472951615 is a deficient number, since it is larger than the sum of its proper divisors (38218013497929).

52115472951615 is a wasteful number, since it uses less digits than its factorization.

52115472951615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158121621158 (or 1158121621155 counting only the distinct ones).

The product of its digits is 3780000, while the sum is 54.

The spelling of 52115472951615 in words is "fifty-two trillion, one hundred fifteen billion, four hundred seventy-two million, nine hundred fifty-one thousand, six hundred fifteen".

Divisors: 1 3 5 9 15 45 1158121621147 3474364863441 5790608105735 10423094590323 17371824317205 52115472951615