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69679697141 = 521133742221
BaseRepresentation
bin100000011100100111…
…0111100110011110101
320122212002122100221202
41000321032330303311
52120201000302031
652002125422245
75014504440035
oct1007116746365
9218762570852
1069679697141
112760741086a
121160770a985
136755c8b632
1435302798c5
151c2c4412cb
hex10393bccf5

69679697141 has 4 divisors (see below), whose sum is σ = 69813439884. Its totient is φ = 69545954400.

The previous prime is 69679697119. The next prime is 69679697207. The reversal of 69679697141 is 14179697696.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10117342225 + 59562354916 = 100585^2 + 244054^2 .

It is a cyclic number.

It is not a de Polignac number, because 69679697141 - 26 = 69679697077 is a prime.

It is a super-2 number, since 2×696796971412 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69679657141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66870590 + ... + 66871631.

It is an arithmetic number, because the mean of its divisors is an integer number (17453359971).

Almost surely, 269679697141 is an apocalyptic number.

It is an amenable number.

69679697141 is a deficient number, since it is larger than the sum of its proper divisors (133742743).

69679697141 is a wasteful number, since it uses less digits than its factorization.

69679697141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133742742.

The product of its digits is 30862944, while the sum is 65.

The spelling of 69679697141 in words is "sixty-nine billion, six hundred seventy-nine million, six hundred ninety-seven thousand, one hundred forty-one".

Divisors: 1 521 133742221 69679697141