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2812085320551 = 3131373531490969
BaseRepresentation
bin101000111010111101010…
…110001011101101100111
3100221211111001122111002120
4220322331112023231213
5332033122320224201
65551504255441023
7410111044556553
oct50727526135547
910854431574076
102812085320551
11994664941801
12395001826173
131752422495a0
149a169cc2863
154d237295536
hex28ebd58bb67

2812085320551 has 32 divisors (see below), whose sum is σ = 4078864520640. Its totient is φ = 1713014882304.

The previous prime is 2812085320547. The next prime is 2812085320579. The reversal of 2812085320551 is 1550235802182.

It is a happy number.

It is not a de Polignac number, because 2812085320551 - 22 = 2812085320547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2812085320511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1140595 + ... + 2631563.

It is an arithmetic number, because the mean of its divisors is an integer number (127464516270).

Almost surely, 22812085320551 is an apocalyptic number.

2812085320551 is a deficient number, since it is larger than the sum of its proper divisors (1266779200089).

2812085320551 is a wasteful number, since it uses less digits than its factorization.

2812085320551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491475.

The product of its (nonzero) digits is 192000, while the sum is 42.

The spelling of 2812085320551 in words is "two trillion, eight hundred twelve billion, eighty-five million, three hundred twenty thousand, five hundred fifty-one".

Divisors: 1 3 13 39 137 353 411 1059 1781 4589 5343 13767 48361 145083 628693 1490969 1886079 4472907 19382597 58147791 204262753 526312057 612788259 1578936171 2655415789 6842056741 7966247367 20526170223 72104751809 216314255427 937361773517 2812085320551