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68031512750 = 2531483183497
BaseRepresentation
bin111111010110111111…
…101000000010101110
320111121020021221000102
4333112333220002232
52103312031402000
651130411231102
74625612213525
oct772677500256
9214536257012
1068031512750
1126941019503
1211227748492
1365526849b6
1434154014bc
151b828c53d5
hexfd6fe80ae

68031512750 has 32 divisors (see below), whose sum is σ = 127441562976. Its totient is φ = 27194107200.

The previous prime is 68031512723. The next prime is 68031512789. The reversal of 68031512750 is 5721513086.

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, 279002 + ... + 462498.

It is an arithmetic number, because the mean of its divisors is an integer number (3982548843).

Almost surely, 268031512750 is an apocalyptic number.

68031512750 is a deficient number, since it is larger than the sum of its proper divisors (59410050226).

68031512750 is a wasteful number, since it uses less digits than its factorization.

68031512750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184997 (or 184987 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The spelling of 68031512750 in words is "sixty-eight billion, thirty-one million, five hundred twelve thousand, seven hundred fifty".

Divisors: 1 2 5 10 25 50 125 250 1483 2966 7415 14830 37075 74150 183497 185375 366994 370750 917485 1834970 4587425 9174850 22937125 45874250 272126051 544252102 1360630255 2721260510 6803151275 13606302550 34015756375 68031512750