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69408759942 = 23279481710133
BaseRepresentation
bin100000010100100010…
…1011010000010000110
320122011012211022222200
41000221011122002012
52114122120304232
651515210335330
75005004503464
oct1005105320206
9218135738880
1069408759942
1127488487725
1211550a2a546
136711ac8072
1435062ad834
151c1377377c
hex102915a086

69408759942 has 48 divisors (see below), whose sum is σ = 152335909440. Its totient is φ = 22836393216.

The previous prime is 69408759941. The next prime is 69408759949. The reversal of 69408759942 is 24995780496.

It is a self number, because there is not a number n which added to its sum of digits gives 69408759942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69408759941) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6844708 + ... + 6854840.

It is an arithmetic number, because the mean of its divisors is an integer number (3173664780).

Almost surely, 269408759942 is an apocalyptic number.

69408759942 is an abundant number, since it is smaller than the sum of its proper divisors (82927149498).

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

69408759942 is a wasteful number, since it uses less digits than its factorization.

69408759942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15037 (or 15034 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 69408759942 in words is "sixty-nine billion, four hundred eight million, seven hundred fifty-nine thousand, nine hundred forty-two".

Divisors: 1 2 3 6 9 18 79 158 237 474 711 1422 4817 9634 10133 14451 20266 28902 30399 43353 60798 86706 91197 182394 380543 761086 800507 1141629 1601014 2283258 2401521 3424887 4803042 6849774 7204563 14409126 48810661 97621322 146431983 292863966 439295949 878591898 3856042219 7712084438 11568126657 23136253314 34704379971 69408759942