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69742017961 = 7211129391499
BaseRepresentation
bin100000011110011110…
…0101011110110101001
320200000102220121001021
41000330330223312221
52120312424033321
652012233252441
75016162241300
oct1007474536651
9220012817037
1069742017961
1127639607380
1211624564121
136765b6ba65
14353865d437
151c32b51941
hex103cf2bda9

69742017961 has 12 divisors (see below), whose sum is σ = 88503786000. Its totient is φ = 54344429160.

The previous prime is 69742017889. The next prime is 69742017997. The reversal of 69742017961 is 16971024796.

It is not a de Polignac number, because 69742017961 - 217 = 69741886889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 69742017899 and 69742017908.

It is not an unprimeable number, because it can be changed into a prime (69742017061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64695211 + ... + 64696288.

It is an arithmetic number, because the mean of its divisors is an integer number (7375315500).

Almost surely, 269742017961 is an apocalyptic number.

It is an amenable number.

69742017961 is a deficient number, since it is larger than the sum of its proper divisors (18761768039).

69742017961 is a wasteful number, since it uses less digits than its factorization.

69742017961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129391524 (or 129391517 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 52.

The spelling of 69742017961 in words is "sixty-nine billion, seven hundred forty-two million, seventeen thousand, nine hundred sixty-one".

Divisors: 1 7 11 49 77 539 129391499 905740493 1423306489 6340183451 9963145423 69742017961