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67213950105 = 357956720633
BaseRepresentation
bin111110100110010000…
…110111110010011001
320102111020220102220110
4332212100313302121
52100123232400410
650513324114533
74566424102131
oct764620676231
9212436812813
1067213950105
11265615825a5
1211039995a49
136452192c13
1433789c3ac1
151b35c2e720
hexfa6437c99

67213950105 has 16 divisors (see below), whose sum is σ = 108903617280. Its totient is φ = 35393674368.

The previous prime is 67213950059. The next prime is 67213950131. The reversal of 67213950105 is 50105931276.

It is not a de Polignac number, because 67213950105 - 217 = 67213819033 is a prime.

It is a super-2 number, since 2×672139501052 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28359132 + ... + 28361501.

It is an arithmetic number, because the mean of its divisors is an integer number (6806476080).

Almost surely, 267213950105 is an apocalyptic number.

It is an amenable number.

67213950105 is a deficient number, since it is larger than the sum of its proper divisors (41689667175).

67213950105 is a wasteful number, since it uses less digits than its factorization.

67213950105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56720720.

The product of its (nonzero) digits is 56700, while the sum is 39.

The spelling of 67213950105 in words is "sixty-seven billion, two hundred thirteen million, nine hundred fifty thousand, one hundred five".

Divisors: 1 3 5 15 79 237 395 1185 56720633 170161899 283603165 850809495 4480930007 13442790021 22404650035 67213950105