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68537085485 = 5111246128827
BaseRepresentation
bin111111110101001000…
…001110111000101101
320112220110121200102112
4333311020032320231
52110330443213420
651252511333405
74644261420521
oct776510167055
9215813550375
1068537085485
1127080441810
1211348b21265
13660333b46b
143462607d81
151bb1e8e8c5
hexff520ee2d

68537085485 has 8 divisors (see below), whose sum is σ = 89721275616. Its totient is φ = 49845153040.

The previous prime is 68537085481. The next prime is 68537085493. The reversal of 68537085485 is 58458073586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68537085485 - 22 = 68537085481 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68537085481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 623064359 + ... + 623064468.

It is an arithmetic number, because the mean of its divisors is an integer number (11215159452).

Almost surely, 268537085485 is an apocalyptic number.

It is an amenable number.

68537085485 is a deficient number, since it is larger than the sum of its proper divisors (21184190131).

68537085485 is a wasteful number, since it uses less digits than its factorization.

68537085485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246128843.

The product of its (nonzero) digits is 32256000, while the sum is 59.

The spelling of 68537085485 in words is "sixty-eight billion, five hundred thirty-seven million, eighty-five thousand, four hundred eighty-five".

Divisors: 1 5 11 55 1246128827 6230644135 13707417097 68537085485