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69983912742 = 23157523314197
BaseRepresentation
bin100000100101101011…
…1011100001100100110
320200122022002010022020
41001023113130030212
52121311340201432
652052234044010
75025160305012
oct1011327341446
9220568063266
1069983912742
1127753104517
1211691579606
1367a4004173
14355c829542
151c48ed422c
hex104b5dc326

69983912742 has 32 divisors (see below), whose sum is σ = 140896181472. Its totient is φ = 23173323264.

The previous prime is 69983912731. The next prime is 69983912749. The reversal of 69983912742 is 24721938996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69983912749) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4922388 + ... + 4936584.

It is an arithmetic number, because the mean of its divisors is an integer number (4403005671).

Almost surely, 269983912742 is an apocalyptic number.

69983912742 is an abundant number, since it is smaller than the sum of its proper divisors (70912268730).

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

69983912742 is a wasteful number, since it uses less digits than its factorization.

69983912742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19592.

The product of its digits is 11757312, while the sum is 60.

The spelling of 69983912742 in words is "sixty-nine billion, nine hundred eighty-three million, nine hundred twelve thousand, seven hundred forty-two".

Divisors: 1 2 3 6 157 314 471 942 5233 10466 14197 15699 28394 31398 42591 85182 821581 1643162 2228929 2464743 4457858 4929486 6686787 13373574 74292901 148585802 222878703 445757406 11663985457 23327970914 34991956371 69983912742