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67869561496 = 23111940591843
BaseRepresentation
bin111111001101010101…
…110101001010011000
320111011221112221122211
4333031111311022120
52102444101431441
651102344124504
74621604516452
oct771525651230
9214157487584
1067869561496
11268686640a0
12111a1466734
136527c60059
1433dbac52d2
151b73584a81
hexfcd575298

67869561496 has 32 divisors (see below), whose sum is σ = 146130638400. Its totient is φ = 29226126240.

The previous prime is 67869561451. The next prime is 67869561521. The reversal of 67869561496 is 69416596876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20294250 + ... + 20297593.

It is an arithmetic number, because the mean of its divisors is an integer number (4566582450).

Almost surely, 267869561496 is an apocalyptic number.

It is an amenable number.

67869561496 is an abundant number, since it is smaller than the sum of its proper divisors (78261076904).

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

67869561496 is a wasteful number, since it uses less digits than its factorization.

67869561496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40591879 (or 40591875 counting only the distinct ones).

The product of its digits is 117573120, while the sum is 67.

The spelling of 67869561496 in words is "sixty-seven billion, eight hundred sixty-nine million, five hundred sixty-one thousand, four hundred ninety-six".

Divisors: 1 2 4 8 11 19 22 38 44 76 88 152 209 418 836 1672 40591843 81183686 162367372 324734744 446510273 771245017 893020546 1542490034 1786041092 3084980068 3572082184 6169960136 8483695187 16967390374 33934780748 67869561496