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69930868931 = 71119439108883
BaseRepresentation
bin100000100100000110…
…1000110000011000011
320200111121021012212122
41001020031012003003
52121204300301211
652043101114455
75023644402230
oct1011015060303
9220447235778
1069930868931
1127726174960
1211677858a2b
1367960214b1
14355577c787
151c445076db
hex10483460c3

69930868931 has 32 divisors (see below), whose sum is σ = 91985203200. Its totient is φ = 51505541280.

The previous prime is 69930868897. The next prime is 69930868933. The reversal of 69930868931 is 13986803996.

It is a cyclic number.

It is not a de Polignac number, because 69930868931 - 214 = 69930852547 is a prime.

It is a super-2 number, since 2×699308689312 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (69930868933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 587816 + ... + 696698.

It is an arithmetic number, because the mean of its divisors is an integer number (2874537600).

Almost surely, 269930868931 is an apocalyptic number.

69930868931 is a deficient number, since it is larger than the sum of its proper divisors (22054334269).

69930868931 is a wasteful number, since it uses less digits than its factorization.

69930868931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109359.

The product of its (nonzero) digits is 15116544, while the sum is 62.

The spelling of 69930868931 in words is "sixty-nine billion, nine hundred thirty million, eight hundred sixty-eight thousand, nine hundred thirty-one".

Divisors: 1 7 11 19 77 133 209 439 1463 3073 4829 8341 33803 58387 91751 108883 642257 762181 1197713 2068777 8383991 14481439 22756547 47799637 159295829 334597459 525796007 908193103 3680572049 6357351721 9990124133 69930868931