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80902238898 = 23131049988759
BaseRepresentation
bin100101101011000100…
…1100011001010110010
321201211012211120002110
41023112021203022302
52311141433121043
6101055503430150
75562555453465
oct1132611431262
9251735746073
1080902238898
1131346228568
1213819bb5356
1378240335a0
143cb69192dc
1521877ddb33
hex12d62632b2

80902238898 has 32 divisors (see below), whose sum is σ = 174417264000. Its totient is φ = 24869241216.

The previous prime is 80902238897. The next prime is 80902238917. The reversal of 80902238898 is 89883220908.

It is not an unprimeable number, because it can be changed into a prime (80902238891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412558 + ... + 576201.

It is an arithmetic number, because the mean of its divisors is an integer number (5450539500).

Almost surely, 280902238898 is an apocalyptic number.

80902238898 is an abundant number, since it is smaller than the sum of its proper divisors (93515025102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80902238898 is a wasteful number, since it uses less digits than its factorization.

80902238898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989826.

The product of its (nonzero) digits is 3981312, while the sum is 57.

The spelling of 80902238898 in words is "eighty billion, nine hundred two million, two hundred thirty-eight thousand, eight hundred ninety-eight".

Divisors: 1 2 3 6 13 26 39 78 1049 2098 3147 6294 13637 27274 40911 81822 988759 1977518 2966277 5932554 12853867 25707734 38561601 77123202 1037208191 2074416382 3111624573 6223249146 13483706483 26967412966 40451119449 80902238898