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80913000637 = 773330747881
BaseRepresentation
bin100101101011011001…
…0100110100010111101
321201211222002022102101
41023112302212202331
52311202212010022
6101100530225101
75563046105020
oct1132662464275
9251758068371
1080913000637
1131351308a67
1213821725191
137826330a91
143cb811b1b7
152188717627
hex12d6ca68bd

80913000637 has 16 divisors (see below), whose sum is σ = 93769044352. Its totient is φ = 68381832960.

The previous prime is 80913000631. The next prime is 80913000647. The reversal of 80913000637 is 73600031908.

It is not a de Polignac number, because 80913000637 - 223 = 80904612029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80913000596 and 80913000605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80913000631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1665937 + ... + 1713817.

It is an arithmetic number, because the mean of its divisors is an integer number (5860565272).

Almost surely, 280913000637 is an apocalyptic number.

80913000637 is the 164229-th hex number.

It is an amenable number.

80913000637 is a deficient number, since it is larger than the sum of its proper divisors (12856043715).

80913000637 is a wasteful number, since it uses less digits than its factorization.

80913000637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51268.

The product of its (nonzero) digits is 27216, while the sum is 37.

The spelling of 80913000637 in words is "eighty billion, nine hundred thirteen million, six hundred thirty-seven", and thus it is an aban number.

Divisors: 1 7 73 511 3307 23149 47881 241411 335167 1689877 3495313 24467191 158342467 1108397269 11559000091 80913000637