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80715338580 = 22352085764499
BaseRepresentation
bin100101100101100000…
…0100101001101010100
321201100012011001001110
41023023000211031110
52310301111313310
6101025145455020
75555126025552
oct1131300451524
9251305131043
1080715338580
113125a782598
12137874a1470
1377c43b4996
143c99b86bd2
1521761c0d20
hex12cb025354

80715338580 has 48 divisors (see below), whose sum is σ = 226017288000. Its totient is φ = 21522724608.

The previous prime is 80715338579. The next prime is 80715338591. The reversal of 80715338580 is 8583351708.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1219171 + ... + 1283669.

It is an arithmetic number, because the mean of its divisors is an integer number (4708693500).

Almost surely, 280715338580 is an apocalyptic number.

It is an amenable number.

80715338580 is an abundant number, since it is smaller than the sum of its proper divisors (145301949420).

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

80715338580 is a wasteful number, since it uses less digits than its factorization.

80715338580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85368 (or 85366 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 80715338580 in words is "eighty billion, seven hundred fifteen million, three hundred thirty-eight thousand, five hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 20857 41714 62571 64499 83428 104285 125142 128998 193497 208570 250284 257996 312855 322495 386994 417140 625710 644990 773988 967485 1251420 1289980 1934970 3869940 1345255643 2690511286 4035766929 5381022572 6726278215 8071533858 13452556430 16143067716 20178834645 26905112860 40357669290 80715338580