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69351793138 = 2338091025641
BaseRepresentation
bin100000010010110110…
…0000110000111110010
320122000020122010020001
41000211230012013302
52114013024340023
651505413340214
75003413341505
oct1004554060762
9218006563201
1069351793138
1127459308721
121153593766a
1367030708b4
1434dc8c113c
151c0d76e6ad
hex1025b061f2

69351793138 has 8 divisors (see below), whose sum is σ = 104030868060. Its totient is φ = 34674837120.

The previous prime is 69351793081. The next prime is 69351793169. The reversal of 69351793138 is 83139715396.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65560066209 + 3791726929 = 256047^2 + 61577^2 .

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

It is a super-3 number, since 3×693517931383 (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445203 + ... + 580438.

Almost surely, 269351793138 is an apocalyptic number.

69351793138 is a deficient number, since it is larger than the sum of its proper divisors (34679074922).

69351793138 is a wasteful number, since it uses less digits than its factorization.

69351793138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059452.

The product of its digits is 3674160, while the sum is 55.

The spelling of 69351793138 in words is "sixty-nine billion, three hundred fifty-one million, seven hundred ninety-three thousand, one hundred thirty-eight".

Divisors: 1 2 33809 67618 1025641 2051282 34675896569 69351793138