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69138690680 = 2351728467267
BaseRepresentation
bin100000001100011111…
…1001011001001111000
320121110101122101121102
41000120333023021320
52113044001100210
651432322030532
74665215113523
oct1003077131170
9217411571542
1069138690680
1127359a96694
12114964a8448
13669ab79877
1434bc48bbba
151be9bc7ea5
hex1018fcb278

69138690680 has 16 divisors (see below), whose sum is σ = 155562054120. Its totient is φ = 27655476256.

The previous prime is 69138690631. The next prime is 69138690763. The reversal of 69138690680 is 8609683196.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 864233594 + ... + 864233673.

Almost surely, 269138690680 is an apocalyptic number.

It is an amenable number.

69138690680 is an abundant number, since it is smaller than the sum of its proper divisors (86423363440).

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

69138690680 is a wasteful number, since it uses less digits than its factorization.

69138690680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728467278 (or 1728467274 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 56.

The spelling of 69138690680 in words is "sixty-nine billion, one hundred thirty-eight million, six hundred ninety thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 1728467267 3456934534 6913869068 8642336335 13827738136 17284672670 34569345340 69138690680