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67042745976 = 23310925627961
BaseRepresentation
bin111110011100000011…
…110001111001111000
320102001022202100222210
4332130003301321320
52044300420332401
650444330415120
74562244636543
oct763403617170
9212038670883
1067042745976
1126483978388
1210bb05914a0
13642587b7bb
14335dd7985a
151b25bb24d6
hexf9c0f1e78

67042745976 has 32 divisors (see below), whose sum is σ = 169144549200. Its totient is φ = 22142557440.

The previous prime is 67042745971. The next prime is 67042745989. The reversal of 67042745976 is 67954724076.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67042745971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12811365 + ... + 12816596.

Almost surely, 267042745976 is an apocalyptic number.

It is an amenable number.

67042745976 is an abundant number, since it is smaller than the sum of its proper divisors (102101803224).

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

67042745976 is a wasteful number, since it uses less digits than its factorization.

67042745976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25628079 (or 25628075 counting only the distinct ones).

The product of its (nonzero) digits is 17781120, while the sum is 57.

The spelling of 67042745976 in words is "sixty-seven billion, forty-two million, seven hundred forty-five thousand, nine hundred seventy-six".

Divisors: 1 2 3 4 6 8 12 24 109 218 327 436 654 872 1308 2616 25627961 51255922 76883883 102511844 153767766 205023688 307535532 615071064 2793447749 5586895498 8380343247 11173790996 16760686494 22347581992 33521372988 67042745976